summaryrefslogtreecommitdiff
path: root/recipes/time/files/debian.patch
blob: 40df19da452682a8d61818187b4bbb7e0130182a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
--- time-1.7.orig/configure.in
+++ time-1.7/configure.in
@@ -1,11 +1,8 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(time.c)
-VERSION=1.7
-AC_SUBST(VERSION)
-PACKAGE=time
-AC_SUBST(PACKAGE)
+AM_INIT_AUTOMAKE(time, 1.7)
 
-AC_ARG_PROGRAM
+AM_MAINTAINER_MODE
 
 dnl Checks for programs.
 AC_PROG_CC
@@ -15,7 +12,7 @@
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS(unistd.h string.h sys/rusage.h)
+AC_CHECK_HEADERS(unistd.h string.h sys/rusage.h sys/resource.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
--- time-1.7.orig/version.texi
+++ time-1.7/version.texi
@@ -1,3 +1,3 @@
-@set UPDATED 12 June 1996
+@set UPDATED 9 May 2002
 @set EDITION 1.7
 @set VERSION 1.7
--- time-1.7.orig/time.c
+++ time-1.7/time.c
@@ -147,6 +147,10 @@
   NULL
 };
 
+
+/* If true, do not show the exit message */
+static boolean quiet;
+
 /* If true, show an English description next to each statistic.  */
 static boolean verbose;
 
@@ -172,6 +176,7 @@
   {"help", no_argument, NULL, 'h'},
   {"output-file", required_argument, NULL, 'o'},
   {"portability", no_argument, NULL, 'p'},
+  {"quiet", no_argument,NULL, 'q'},
   {"verbose", no_argument, NULL, 'v'},
   {"version", no_argument, NULL, 'V'},
   {NULL, no_argument, NULL, 0}
@@ -333,7 +338,8 @@
   else if (WIFSIGNALED (resp->waitstatus))
     fprintf (fp, "Command terminated by signal %d\n",
 	     WTERMSIG (resp->waitstatus));
-  else if (WIFEXITED (resp->waitstatus) && WEXITSTATUS (resp->waitstatus))
+  else if (WIFEXITED (resp->waitstatus) && WEXITSTATUS (resp->waitstatus)
+	   && !quiet)
     fprintf (fp, "Command exited with non-zero status %d\n",
 	     WEXITSTATUS (resp->waitstatus));
 
@@ -523,6 +529,7 @@
   char *format;			/* Format found in environment.  */
 
   /* Initialize the option flags.  */
+  quiet = false;
   verbose = false;
   outfile = NULL;
   outfp = stderr;
@@ -536,7 +543,7 @@
   if (format)
     output_format = format;
 
-  while ((optc = getopt_long (argc, argv, "+af:o:pvV", longopts, (int *) 0))
+  while ((optc = getopt_long (argc, argv, "+af:o:pqvV", longopts, (int *) 0))
 	 != EOF)
     {
       switch (optc)
@@ -555,6 +562,9 @@
 	case 'p':
 	  output_format = posix_format;
 	  break;
+	case 'q':
+	  quiet = true;
+	  break;
 	case 'v':
 	  verbose = true;
 	  break;
@@ -642,9 +652,9 @@
   fflush (outfp);
 
   if (WIFSTOPPED (res.waitstatus))
-    exit (WSTOPSIG (res.waitstatus));
+    exit (WSTOPSIG (res.waitstatus) + 128);
   else if (WIFSIGNALED (res.waitstatus))
-    exit (WTERMSIG (res.waitstatus));
+    exit (WTERMSIG (res.waitstatus) + 128);
   else if (WIFEXITED (res.waitstatus))
     exit (WEXITSTATUS (res.waitstatus));
 }
@@ -657,7 +667,7 @@
   fprintf (stream, "\
 Usage: %s [-apvV] [-f format] [-o file] [--append] [--verbose]\n\
        [--portability] [--format=format] [--output=file] [--version]\n\
-       [--help] command [arg...]\n",
+       [--quiet] [--help] command [arg...]\n",
 	   program_name);
   exit (status);
 }
--- time-1.7.orig/resuse.h
+++ time-1.7/resuse.h
@@ -36,19 +36,8 @@
 # include <sys/rusage.h>
 #else
 # define TV_MSEC tv_usec / 1000
-# if HAVE_WAIT3
+# if HAVE_SYS_RESOURCE_H
 #  include <sys/resource.h>
-# else
-/* Process resource usage structure.  */
-struct rusage
-{
-  struct timeval ru_utime;	/* User time used.  */
-  struct timeval ru_stime;	/* System time used.  */
-  int ru_maxrss, ru_ixrss, ru_idrss, ru_isrss,
-  ru_minflt, ru_majflt, ru_nswap, ru_inblock, 
-  ru_oublock, ru_msgsnd, ru_msgrcv, ru_nsignals,
-  ru_nvcsw, ru_nivcsw;
-};
 # endif
 #endif
 
--- time-1.7.orig/time.texi
+++ time-1.7/time.texi
@@ -11,6 +11,12 @@
 @finalout
 @end iftex
 
+@dircategory Individual utilities
+@direntry
+* time: (time).                     Run programs and summarize
+                                    system resource usage.
+@end direntry
+
 @ifinfo
 This file documents the the GNU @code{time} command for running programs
 and summarizing the system resources they use.
@@ -185,6 +191,10 @@
 sys %S
 @end example
 
+@item -q
+@itemx --quiet
+Suppress non-zero error code from the executed program.
+
 @item -v
 @itemx --verbose
 @cindex format
--- time-1.7.orig/time.info
+++ time-1.7/time.info
@@ -1,5 +1,10 @@
-This is Info file ./time.info, produced by Makeinfo-1.55 from the input
-file time.texi.
+This is time.info, produced by makeinfo version 4.1 from time.texi.
+
+INFO-DIR-SECTION Individual utilities
+START-INFO-DIR-ENTRY
+* time: (time).                     Run programs and summarize
+                                    system resource usage.
+END-INFO-DIR-ENTRY
 
    This file documents the the GNU `time' command for running programs
 and summarizing the system resources they use.
@@ -31,7 +36,7 @@
 
 * Resource Measurement::  Measuring program resource use.
 
- -- The Detailed Node Listing --
+ --- The Detailed Node Listing ---
 
 Measuring Program Resource Use
 
@@ -58,14 +63,14 @@
    The `time' command runs another program, then displays information
 about the resources used by that program, collected by the system while
 the program was running.  You can select which information is reported
-and the format in which it is shown (*note Setting Format::.), or have
+and the format in which it is shown (*note Setting Format::), or have
 `time' save the information in a file instead of displaying it on the
-screen (*note Redirecting::.).
+screen (*note Redirecting::).
 
    The resources that `time' can report on fall into the general
 categories of time, memory, and I/O and IPC calls.  Some systems do not
 provide much information about program resource use; `time' reports
-unavailable information as zero values (*note Accuracy::.).
+unavailable information as zero values (*note Accuracy::).
 
    The format of the `time' command is:
 
@@ -132,6 +137,10 @@
           user %U
           sys %S
 
+`-q'
+`--quiet'
+     Suppress non-zero error code from the executed program.
+
 `-v'
 `--verbose'
      Use the built-in verbose format, which displays each available
@@ -174,7 +183,7 @@
    The resource specifiers, which are a superset of those recognized by
 the `tcsh' builtin `time' command, are listed below.  Not all resources
 are measured by all versions of Unix, so some of the values might be
-reported as zero (*note Accuracy::.).
+reported as zero (*note Accuracy::).
 
 * Menu:
 
@@ -308,11 +317,11 @@
 `-o FILE'
 `--output=FILE'
      Write the resource use statistics to FILE.  By default, this
-     *overwrites* the file, destroying the file's previous contents.
+     _overwrites_ the file, destroying the file's previous contents.
 
 `-a'
 `--append'
-     *Append* the resource use information to the output file instead
+     _Append_ the resource use information to the output file instead
      of overwriting it.  This option is only useful with the `-o' or
      `--output' option.
 
@@ -437,7 +446,7 @@
 
 `-a'
 `--append'
-     *Append* the resource use information to the output file instead
+     _Append_ the resource use information to the output file instead
      of overwriting it.
 
 `-f FORMAT'
@@ -462,17 +471,17 @@
 
 
 Tag Table:
-Node: Top934
-Node: Resource Measurement1725
-Node: Setting Format3678
-Node: Format String4907
-Node: Time Resources6214
-Node: Memory Resources6844
-Node: I/O Resources7549
-Node: Command Info8747
-Node: Redirecting8964
-Node: Examples9754
-Node: Accuracy12064
-Node: Invoking time13586
+Node: Top1115
+Node: Resource Measurement1908
+Node: Setting Format3858
+Node: Format String5164
+Node: Time Resources6470
+Node: Memory Resources7100
+Node: I/O Resources7805
+Node: Command Info9003
+Node: Redirecting9220
+Node: Examples10010
+Node: Accuracy12320
+Node: Invoking time13842
 
 End Tag Table
--- time-1.7.orig/time.html
+++ time-1.7/time.html
@@ -0,0 +1,1021 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+                      "http://www.w3.org/TR/html40/loose.dtd">
+<HTML>
+<!-- Created on September, 1 2003 by texi2html 1.66 -->
+<!--
+Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
+            Karl Berry  <karl@freefriends.org>
+            Olaf Bachmann <obachman@mathematik.uni-kl.de>
+            and many others.
+Maintained by: Many creative people <dev@texi2html.cvshome.org>
+Send bugs and suggestions to <users@texi2html.cvshome.org>
+
+-->
+<HEAD>
+<TITLE>Measuring Program Resource Use</TITLE>
+
+<META NAME="description" CONTENT="Measuring Program Resource Use">
+<META NAME="keywords" CONTENT="Measuring Program Resource Use">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+<META NAME="Generator" CONTENT="texi2html 1.66">
+
+</HEAD>
+
+<BODY LANG="en" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#800080" ALINK="#FF0000">
+
+<A NAME="SEC_Top"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>Measuring Program Resource Use</H1>
+
+<P>
+
+This file documents the the GNU <CODE>time</CODE> command for running programs
+and summarizing the system resources they use.
+This is edition 1.7, for version 1.7.
+</P>
+<P>
+
+</P>
+<TABLE BORDER="0" CELLSPACING="0">
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC1">1. Measuring Program Resource Use</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Measuring program resource use.</TD></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP"> -- The Detailed Node Listing ---
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">Measuring Program Resource Use
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC2">1.1 Setting the Output Format</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Selecting the information reported by <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC3">1.2 The Format String</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">The information <CODE>time</CODE> can report.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC8">1.3 Redirecting Output</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Writing the information to a file.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC9">1.4 Examples</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Examples of using <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC10">1.5 Accuracy</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Limitations on the accuracy of <CODE>time</CODE> output.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC11">1.6 Running the <CODE>time</CODE> Command</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Summary of the options to the <CODE>time</CODE> command.</TD></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">The Format String
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC4">1.2.1 Time Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC5">1.2.2 Memory Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC6">1.2.3 I/O Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC7">1.2.4 Command Info</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+</TABLE>
+<P>
+
+<HR SIZE=1>
+<A NAME="SEC1"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC2"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[ &lt;&lt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<A NAME="Resource Measurement"></A>
+<H1> 1. Measuring Program Resource Use </H1>
+<!--docid::SEC1::-->
+<P>
+
+The <CODE>time</CODE> command runs another program, then displays information
+about the resources used by that program, collected by the system while
+the program was running.  You can select which information is reported
+and the format in which it is shown (see section <A HREF="time.html#SEC2">1.1 Setting the Output Format</A>), or have
+<CODE>time</CODE> save the information in a file instead of displaying it on the
+screen (see section <A HREF="time.html#SEC8">1.3 Redirecting Output</A>).
+</P>
+<P>
+
+The resources that <CODE>time</CODE> can report on fall into the general
+categories of time, memory, and I/O and IPC calls.  Some systems do not
+provide much information about program resource use; <CODE>time</CODE>
+reports unavailable information as zero values (see section <A HREF="time.html#SEC10">1.5 Accuracy</A>).
+</P>
+<P>
+
+The format of the <CODE>time</CODE> command is:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>time [option<small>...</small>] <VAR>command</VAR> [<VAR>arg</VAR><small>...</small>]
+</pre></td></tr></table><P>
+
+<A NAME="IDX1"></A>
+<CODE>time</CODE> runs the program <VAR>command</VAR>, with any given arguments
+<VAR>arg</VAR><small>...</small>.  When <VAR>command</VAR> finishes, <CODE>time</CODE> displays
+information about resources used by <VAR>command</VAR>.
+</P>
+<P>
+
+Here is an example of using <CODE>time</CODE> to measure the time and other
+resources used by running the program <CODE>grep</CODE>:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time grep nobody /etc/aliases
+nobody:/dev/null
+etc-files:nobody
+misc-group:nobody
+0.07user 0.50system 0:06.69elapsed 8%CPU (0avgtext+489avgdata 324maxresident)k
+46inputs+7outputs (43major+251minor)pagefaults 0swaps
+</pre></td></tr></table><P>
+
+Mail suggestions and bug reports for GNU <CODE>time</CODE> to
+<CODE>bug-gnu-utils@prep.ai.mit.edu</CODE>.  Please include the version of
+<CODE>time</CODE>, which you can get by running `<SAMP>time --version</SAMP>', and the
+operating system and C compiler you used.
+</P>
+<P>
+
+<TABLE BORDER="0" CELLSPACING="0">
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC2">1.1 Setting the Output Format</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Selecting the information reported by <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC3">1.2 The Format String</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">The information <CODE>time</CODE> can report.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC8">1.3 Redirecting Output</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Writing the information to a file.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC9">1.4 Examples</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Examples of using <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC10">1.5 Accuracy</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Limitations on the accuracy of <CODE>time</CODE> output.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC11">1.6 Running the <CODE>time</CODE> Command</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Summary of the options to the <CODE>time</CODE> command.</TD></TR>
+</TABLE>
+<P>
+
+<A NAME="Setting Format"></A>
+<HR SIZE="6">
+<A NAME="SEC2"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC3"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.1 Setting the Output Format </H2>
+<!--docid::SEC2::-->
+<P>
+
+<CODE>time</CODE> uses a <EM>format string</EM> to determine which information to
+display about the resources used by the command it runs.  See section <A HREF="time.html#SEC3">1.2 The Format String</A>, for the interpretation of the format string contents.
+</P>
+<P>
+
+You can specify a format string with the command line options listed
+below.  If no format is specified on the command line, but the
+<CODE>TIME</CODE> environment variable is set, its value is used as the format
+string.  Otherwise, the default format built into <CODE>time</CODE> is used:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>%Uuser %Ssystem %Eelapsed %PCPU (%Xtext+%Ddata %Mmax)k
+%Iinputs+%Ooutputs (%Fmajor+%Rminor)pagefaults %Wswaps
+</pre></td></tr></table><P>
+
+The command line options to set the format are:
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>-f <VAR>format</VAR></CODE>
+<DD><DT><CODE>--format=<VAR>format</VAR></CODE>
+<DD>Use <VAR>format</VAR> as the format string.
+<P>
+
+</P>
+<DT><CODE>-p</CODE>
+<DD><DT><CODE>--portability</CODE>
+<DD>Use the following format string, for conformance with POSIX standard
+1003.2:
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>real %e
+user %U
+sys %S
+</pre></td></tr></table><P>
+
+</P>
+<DT><CODE>-q</CODE>
+<DD><DT><CODE>--quiet</CODE>
+<DD>Suppress non-zero error code from the executed program.
+<P>
+
+</P>
+<DT><CODE>-v</CODE>
+<DD><DT><CODE>--verbose</CODE>
+<DD><A NAME="IDX2"></A>
+Use the built-in verbose format, which displays each available piece of
+information on the program's resource use on its own line, with an
+English description of its meaning.
+</DL>
+<P>
+
+<A NAME="Format String"></A>
+<HR SIZE="6">
+<A NAME="SEC3"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC2"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC4"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.2 The Format String </H2>
+<!--docid::SEC3::-->
+<P>
+
+<A NAME="IDX3"></A>
+<A NAME="IDX4"></A>
+The <EM>format string</EM> controls the contents of the <CODE>time</CODE> output.
+It consists of <EM>resource specifiers</EM> and <EM>escapes</EM>, interspersed
+with plain text.
+</P>
+<P>
+
+A backslash introduces an <EM>escape</EM>, which is translated
+into a single printing character upon output.  The valid escapes are
+listed below.  An invalid escape is output as a question mark followed
+by a backslash.
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>\t</CODE>
+<DD>a tab character
+<P>
+
+</P>
+<DT><CODE>\n</CODE>
+<DD>a newline
+<P>
+
+</P>
+<DT><CODE>\\</CODE>
+<DD>a literal backslash
+</DL>
+<P>
+
+<CODE>time</CODE> always prints a newline after printing the resource use
+information, so normally format strings do not end with a newline
+character (or `<SAMP>\n</SAMP>').
+</P>
+<P>
+
+A resource specifier consists of a percent sign followed by another
+character.  An invalid resource specifier is output as a question mark
+followed by the invalid character.  Use `<SAMP>%%</SAMP>' to output a literal
+percent sign.
+</P>
+<P>
+
+The resource specifiers, which are a superset of those recognized by the
+<CODE>tcsh</CODE> builtin <CODE>time</CODE> command, are listed below.  Not all
+resources are measured by all versions of Unix, so some of the values
+might be reported as zero (see section <A HREF="time.html#SEC10">1.5 Accuracy</A>).
+</P>
+<P>
+
+<TABLE BORDER="0" CELLSPACING="0">
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC4">1.2.1 Time Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC5">1.2.2 Memory Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC6">1.2.3 I/O Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC7">1.2.4 Command Info</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+</TABLE>
+<P>
+
+<A NAME="Time Resources"></A>
+<HR SIZE="6">
+<A NAME="SEC4"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC3"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC5"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.1 Time Resources </H3>
+<!--docid::SEC4::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>E</CODE>
+<DD>Elapsed real (wall clock) time used by the process, in
+[hours:]minutes:seconds.
+<P>
+
+</P>
+<DT><CODE>e</CODE>
+<DD>Elapsed real (wall clock) time used by the process, in
+seconds.
+<P>
+
+</P>
+<DT><CODE>S</CODE>
+<DD>Total number of CPU-seconds used by the system on behalf of the process
+(in kernel mode), in seconds.
+<P>
+
+</P>
+<DT><CODE>U</CODE>
+<DD>Total number of CPU-seconds that the process used directly (in user
+mode), in seconds.
+<P>
+
+</P>
+<DT><CODE>P</CODE>
+<DD>Percentage of the CPU that this job got.  This is just user + system
+times divied by the total running time.
+</DL>
+<P>
+
+<A NAME="Memory Resources"></A>
+<HR SIZE="6">
+<A NAME="SEC5"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC4"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC6"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.2 Memory Resources </H3>
+<!--docid::SEC5::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>M</CODE>
+<DD>Maximum resident set size of the process during its lifetime, in
+Kilobytes.
+<P>
+
+</P>
+<DT><CODE>t</CODE>
+<DD>Average resident set size of the process, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>K</CODE>
+<DD>Average total (data+stack+text) memory use of the process, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>D</CODE>
+<DD>Average size of the process's unshared data area, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>p</CODE>
+<DD>Average size of the process's unshared stack, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>X</CODE>
+<DD>Average size of the process's shared text, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>Z</CODE>
+<DD>System's page size, in bytes.  This is a per-system constant, but
+varies between systems.
+</DL>
+<P>
+
+<A NAME="I/O Resources"></A>
+<HR SIZE="6">
+<A NAME="SEC6"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC5"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC7"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.3 I/O Resources </H3>
+<!--docid::SEC6::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>F</CODE>
+<DD>Number of major, or I/O-requiring, page faults that occurred while the
+process was running.  These are faults where the page has actually
+migrated out of primary memory.
+<P>
+
+</P>
+<DT><CODE>R</CODE>
+<DD>Number of minor, or recoverable, page faults.  These are pages that are
+not valid (so they fault) but which have not yet been claimed by other
+virtual pages.  Thus the data in the page is still valid but the system
+tables must be updated.
+<P>
+
+</P>
+<DT><CODE>W</CODE>
+<DD>Number of times the process was swapped out of main memory.
+<P>
+
+</P>
+<DT><CODE>c</CODE>
+<DD>Number of times the process was context-switched involuntarily (because
+the time slice expired).
+<P>
+
+</P>
+<DT><CODE>w</CODE>
+<DD>Number of times that the program was context-switched voluntarily, for
+instance while waiting for an I/O operation to complete.
+<P>
+
+</P>
+<DT><CODE>I</CODE>
+<DD>Number of file system inputs by the process.
+<P>
+
+</P>
+<DT><CODE>O</CODE>
+<DD>Number of file system outputs by the process.
+<P>
+
+</P>
+<DT><CODE>r</CODE>
+<DD>Number of socket messages received by the process.
+<P>
+
+</P>
+<DT><CODE>s</CODE>
+<DD>Number of socket messages sent by the process.
+<P>
+
+</P>
+<DT><CODE>k</CODE>
+<DD>Number of signals delivered to the process.
+</DL>
+<P>
+
+<A NAME="Command Info"></A>
+<HR SIZE="6">
+<A NAME="SEC7"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC6"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC8"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.4 Command Info </H3>
+<!--docid::SEC7::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>C</CODE>
+<DD>Name and command line arguments of the command being timed.
+<P>
+
+</P>
+<DT><CODE>x</CODE>
+<DD>Exit status of the command.
+</DL>
+<P>
+
+<A NAME="Redirecting"></A>
+<HR SIZE="6">
+<A NAME="SEC8"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC7"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC9"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.3 Redirecting Output </H2>
+<!--docid::SEC8::-->
+<P>
+
+By default, <CODE>time</CODE> writes the resource use statistics to the
+standard error stream.  The options below make it write the statistics
+to a file instead.  Doing this can be useful if the program you're
+running writes to the standard error or you're running <CODE>time</CODE>
+noninteractively or in the background.
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>-o <VAR>file</VAR></CODE>
+<DD><DT><CODE>--output=<VAR>file</VAR></CODE>
+<DD>Write the resource use statistics to <VAR>file</VAR>.  By default, this
+<EM>overwrites</EM> the file, destroying the file's previous contents.
+<P>
+
+</P>
+<DT><CODE>-a</CODE>
+<DD><DT><CODE>--append</CODE>
+<DD><EM>Append</EM> the resource use information to the output file instead
+of overwriting it.  This option is only useful with the `<SAMP>-o</SAMP>' or
+`<SAMP>--output</SAMP>' option.
+</DL>
+<P>
+
+<A NAME="Examples"></A>
+<HR SIZE="6">
+<A NAME="SEC9"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC8"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC10"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.4 Examples </H2>
+<!--docid::SEC9::-->
+<P>
+
+Run the command `<SAMP>wc /etc/hosts</SAMP>' and show the default information:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time wc /etc/hosts
+      35     111    1134 /etc/hosts
+0.00user 0.01system 0:00.04elapsed 25%CPU (0avgtext+0avgdata 0maxresident)k
+1inputs+1outputs (0major+0minor)pagefaults 0swaps
+</pre></td></tr></table><P>
+
+Run the command `<SAMP>ls -Fs</SAMP>' and show just the user, system, and
+wall-clock time:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time -f &quot;\t%E real,\t%U user,\t%S sys&quot; ls -Fs
+total 16
+1 account/      1 db/           1 mail/         1 run/
+1 backups/      1 emacs/        1 msgs/         1 rwho/
+1 crash/        1 games/        1 preserve/     1 spool/
+1 cron/         1 log/          1 quotas/       1 tmp/
+        0:00.03 real,   0.00 user,      0.01 sys
+</pre></td></tr></table><P>
+
+Edit the file `<TT>.bashrc</TT>' and have <CODE>time</CODE> append the elapsed time
+and number of signals to the file `<TT>log</TT>', reading the format string
+from the environment variable <CODE>TIME</CODE>:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ export TIME=&quot;\t%E,\t%k&quot; # If using bash or ksh
+eg$ setenv TIME &quot;\t%E,\t%k&quot; # If using csh or tcsh
+eg$ time -a -o log emacs .bashrc
+eg$ cat log
+        0:16.55,        726
+</pre></td></tr></table><P>
+
+Run the command `<SAMP>sleep 4</SAMP>' and show all of the information about it
+verbosely:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time -v sleep 4
+        Command being timed: &quot;sleep 4&quot;
+        User time (seconds): 0.00
+        System time (seconds): 0.05
+        Percent of CPU this job got: 1%
+        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:04.26
+        Average shared text size (kbytes): 36
+        Average unshared data size (kbytes): 24
+        Average stack size (kbytes): 0
+        Average total size (kbytes): 60
+        Maximum resident set size (kbytes): 32
+        Average resident set size (kbytes): 24
+        Major (requiring I/O) page faults: 3
+        Minor (reclaiming a frame) page faults: 0
+        Voluntary context switches: 11
+        Involuntary context switches: 0
+        Swaps: 0
+        File system inputs: 3
+        File system outputs: 1
+        Socket messages sent: 0
+        Socket messages received: 0
+        Signals delivered: 1
+        Page size (bytes): 4096
+        Exit status: 0
+</pre></td></tr></table><P>
+
+<A NAME="Accuracy"></A>
+<HR SIZE="6">
+<A NAME="SEC10"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC9"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC11"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.5 Accuracy </H2>
+<!--docid::SEC10::-->
+<P>
+
+The elapsed time is not collected atomically with the execution of the
+program; as a result, in bizarre circumstances (if the <CODE>time</CODE>
+command gets stopped or swapped out in between when the program being
+timed exits and when <CODE>time</CODE> calculates how long it took to run), it
+could be much larger than the actual execution time.
+</P>
+<P>
+
+When the running time of a command is very nearly zero, some values
+(e.g., the percentage of CPU used) may be reported as either zero (which
+is wrong) or a question mark.
+</P>
+<P>
+
+Most information shown by <CODE>time</CODE> is derived from the <CODE>wait3</CODE>
+system call.  The numbers are only as good as those returned by
+<CODE>wait3</CODE>.  Many systems do not measure all of the resources that
+<CODE>time</CODE> can report on; those resources are reported as zero.  The
+systems that measure most or all of the resources are based on 4.2 or
+4.3BSD.  Later BSD releases use different memory management code that
+measures fewer resources.
+</P>
+<P>
+
+On systems that do not have a <CODE>wait3</CODE> call that returns status
+information, the <CODE>times</CODE> system call is used instead.  It provides
+much less information than <CODE>wait3</CODE>, so on those systems <CODE>time</CODE>
+reports most of the resources as zero.
+</P>
+<P>
+
+The `<SAMP>%I</SAMP>' and `<SAMP>%O</SAMP>' values are allegedly only &quot;real&quot; input
+and output and do not include those supplied by caching devices.  The
+meaning of &quot;real&quot; I/O reported by `<SAMP>%I</SAMP>' and `<SAMP>%O</SAMP>' may be
+muddled for workstations, especially diskless ones.
+</P>
+<P>
+
+<A NAME="Invoking time"></A>
+<HR SIZE="6">
+<A NAME="SEC11"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC10"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.6 Running the <CODE>time</CODE> Command </H2>
+<!--docid::SEC11::-->
+<P>
+
+The format of the <CODE>time</CODE> command is:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>time [option<small>...</small>] <VAR>command</VAR> [<VAR>arg</VAR><small>...</small>]
+</pre></td></tr></table><P>
+
+<A NAME="IDX5"></A>
+<CODE>time</CODE> runs the program <VAR>command</VAR>, with any given arguments
+<VAR>arg</VAR><small>...</small>.  When <VAR>command</VAR> finishes, <CODE>time</CODE> displays
+information about resources used by <VAR>command</VAR> (on the standard error
+output, by default).  If <VAR>command</VAR> exits with non-zero status or is
+terminated by a signal, <CODE>time</CODE> displays a warning message and the
+exit status or signal number.
+</P>
+<P>
+
+Options to <CODE>time</CODE> must appear on the command line before
+<VAR>command</VAR>.  Anything on the command line after <VAR>command</VAR> is
+passed as arguments to <VAR>command</VAR>.
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>-o <VAR>file</VAR></CODE>
+<DD><DT><CODE>--output=<VAR>file</VAR></CODE>
+<DD>Write the resource use statistics to <VAR>file</VAR>.
+<P>
+
+</P>
+<DT><CODE>-a</CODE>
+<DD><DT><CODE>--append</CODE>
+<DD><EM>Append</EM> the resource use information to the output file instead
+of overwriting it.
+<P>
+
+</P>
+<DT><CODE>-f <VAR>format</VAR></CODE>
+<DD><DT><CODE>--format=<VAR>format</VAR></CODE>
+<DD>Use <VAR>format</VAR> as the format string.
+<P>
+
+</P>
+<DT><CODE>--help</CODE>
+<DD>Print a summary of the command line options to <CODE>time</CODE> and exit.
+<P>
+
+</P>
+<DT><CODE>-p</CODE>
+<DD><DT><CODE>--portability</CODE>
+<DD>Use the POSIX format.
+<P>
+
+</P>
+<DT><CODE>-v</CODE>
+<DD><DT><CODE>--verbose</CODE>
+<DD><A NAME="IDX6"></A>
+Use the built-in verbose format.
+<P>
+
+</P>
+<DT><CODE>-V</CODE>
+<DD><DT><CODE>--version</CODE>
+<DD><A NAME="IDX7"></A>
+Print the version number of <CODE>time</CODE> and exit.
+</DL>
+<P>
+
+<HR SIZE="6">
+<A NAME="SEC_Contents"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>Table of Contents</H1>
+<BLOCKQUOTE>
+<A NAME="TOC1" HREF="time.html#SEC1">1. Measuring Program Resource Use</A>
+<BR>
+<BLOCKQUOTE>
+<A NAME="TOC2" HREF="time.html#SEC2">1.1 Setting the Output Format</A>
+<BR>
+<A NAME="TOC3" HREF="time.html#SEC3">1.2 The Format String</A>
+<BR>
+<BLOCKQUOTE>
+<A NAME="TOC4" HREF="time.html#SEC4">1.2.1 Time Resources</A>
+<BR>
+<A NAME="TOC5" HREF="time.html#SEC5">1.2.2 Memory Resources</A>
+<BR>
+<A NAME="TOC6" HREF="time.html#SEC6">1.2.3 I/O Resources</A>
+<BR>
+<A NAME="TOC7" HREF="time.html#SEC7">1.2.4 Command Info</A>
+<BR>
+</BLOCKQUOTE>
+<A NAME="TOC8" HREF="time.html#SEC8">1.3 Redirecting Output</A>
+<BR>
+<A NAME="TOC9" HREF="time.html#SEC9">1.4 Examples</A>
+<BR>
+<A NAME="TOC10" HREF="time.html#SEC10">1.5 Accuracy</A>
+<BR>
+<A NAME="TOC11" HREF="time.html#SEC11">1.6 Running the <CODE>time</CODE> Command</A>
+<BR>
+</BLOCKQUOTE>
+</BLOCKQUOTE>
+<HR SIZE=1>
+<A NAME="SEC_OVERVIEW"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>Short Table of Contents</H1>
+<BLOCKQUOTE>
+<A NAME="TOC1" HREF="time.html#SEC1">1. Measuring Program Resource Use</A>
+<BR>
+
+</BLOCKQUOTE>
+<HR SIZE=1>
+<A NAME="SEC_About"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>About this document</H1>
+This document was generated
+by 
+using <A HREF="http://texi2html.cvshome.org"><I>texi2html</I></A>
+<P></P>
+The buttons in the navigation panels have the following meaning:
+<P></P>
+<table border = "1">
+<TR>
+<TH> Button </TH>
+<TH> Name </TH>
+<TH> Go to </TH>
+<TH> From 1.2.3 go to</TH>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [ &lt; ] </TD>
+<TD ALIGN="CENTER">
+Back
+</TD>
+<TD>
+previous section in reading order
+</TD>
+<TD>
+1.2.2
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [ &gt; ] </TD>
+<TD ALIGN="CENTER">
+Forward
+</TD>
+<TD>
+next section in reading order
+</TD>
+<TD>
+1.2.4
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [ &lt;&lt; ] </TD>
+<TD ALIGN="CENTER">
+FastBack
+</TD>
+<TD>
+beginning of this chapter or previous chapter
+</TD>
+<TD>
+1
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [ Up ] </TD>
+<TD ALIGN="CENTER">
+Up
+</TD>
+<TD>
+up section
+</TD>
+<TD>
+1.2
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [ &gt;&gt; ] </TD>
+<TD ALIGN="CENTER">
+FastForward
+</TD>
+<TD>
+next chapter
+</TD>
+<TD>
+2
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [Top] </TD>
+<TD ALIGN="CENTER">
+Top
+</TD>
+<TD>
+cover (top) of document
+</TD>
+<TD>
+ &nbsp; 
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [Contents] </TD>
+<TD ALIGN="CENTER">
+Contents
+</TD>
+<TD>
+table of contents
+</TD>
+<TD>
+ &nbsp; 
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [Index] </TD>
+<TD ALIGN="CENTER">
+Index
+</TD>
+<TD>
+concept index
+</TD>
+<TD>
+ &nbsp; 
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [ ? ] </TD>
+<TD ALIGN="CENTER">
+About
+</TD>
+<TD>
+this page
+</TD>
+<TD>
+ &nbsp; 
+</TD>
+</TR>
+</TABLE>
+    <P>
+      where the <STRONG> Example </STRONG> assumes that the current position
+      is at <STRONG> Subsubsection One-Two-Three </STRONG> of a document of
+      the following structure:</P>
+    <UL>
+      <LI> 1. Section One
+        <UL>
+          <LI>1.1 Subsection One-One
+            <UL>
+              <LI>...</LI>
+            </UL>
+          <LI>1.2 Subsection One-Two
+            <UL>
+              <LI>1.2.1 Subsubsection One-Two-One</LI>
+              <LI>1.2.2 Subsubsection One-Two-Two</LI>
+              <LI>1.2.3 Subsubsection One-Two-Three &nbsp; &nbsp;
+                <STRONG>&lt;== Current Position </STRONG></LI>
+              <LI>1.2.4 Subsubsection One-Two-Four</LI>
+            </UL>
+          </LI>
+          <LI>1.3 Subsection One-Three
+            <UL>
+              <LI>...</LI>
+            </UL>
+          </LI>
+          <LI>1.4 Subsection One-Four</LI>
+        </UL>
+      </LI>
+    </UL>
+
+<HR SIZE=1>
+<BR>
+<FONT SIZE="-1">
+This document was generated
+by <I>root</I> on <I>September, 1 2003</I>
+using <A HREF="http://texi2html.cvshome.org"><I>texi2html</I></A>
+</FONT>
+
+</BODY>
+</HTML>