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--- old/usr/src/man/man1/sum.1
+++ new/usr/src/man/man1/sum.1
1 1 '\" te
2 2 .\" Copyright (c) 1992, X/Open Company Limited All Rights Reserved
3 3 .\" Copyright 1989 AT&T
4 4 .\" Portions Copyright (c) 2009, Sun Microsystems, Inc. All Rights Reserved.
5 5 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at http://www.opengroup.org/bookstore/.
6 6 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text
7 7 .\" are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical
8 8 .\" and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
9 9 .\" This notice shall appear on any product containing this material.
10 10 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.
11 11 .\" See the License for the specific language governing permissions and limitations under the License. When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with
12 12 .\" the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
13 13 .TH SUM 1 "Aug 11, 2009"
14 14 .SH NAME
15 15 sum \- print checksum and block count for a file
16 16 .SH SYNOPSIS
17 17 .LP
18 18 .nf
19 19 \fB/usr/bin/sum\fR [-abBchHlLpPrRstTw] [-x method] [\fIfile\fR...]
20 20 .fi
21 21
22 22 .SS "ksh93"
23 23 .LP
24 24 .nf
25 25 sum [-abBchHlLpPrRstTw] [-x method] [\fIfile\fR...]
26 26 .fi
27 27
28 28 .SH DESCRIPTION
29 29 .sp
30 30 .LP
31 31 The \fBsum\fR utility and ksh93 built-in command list the checksum, and for
32 32 most methods the block count, for each file argument. The standard input is
33 33 read if there are no file arguments.
34 34 .sp
35 35 .LP
36 36 The \fBgetconf\fR(1) \fBUNIVERSE\fR determines the default sum method: att for
37 37 the att universe, bsd otherwise. The default for the other commands is the
38 38 command name itself. The att method is a true sum, all others are order
39 39 dependent.
40 40 .sp
41 41 .LP
42 42 Method names consist of a leading identifier and 0 or more options separated by
43 43 -.
44 44 .sp
45 45 .LP
46 46 \fBgetconf\fR \fBPATH_RESOLVE\fR determines how symbolic links are handled.
47 47 This can be explicitly overridden by the \fB--logical\fR, \fB--metaphysical\fR,
48 48 and \fB--physical\fR options below. \fBPATH_RESOLVE\fR can be one of:
49 49 .sp
50 50 .ne 2
51 51 .na
52 52 \fB\fB--logical\fR\fR
53 53 .ad
54 54 .RS 18n
55 55 Follow all symbolic links.
56 56 .RE
57 57
58 58 .sp
59 59 .ne 2
60 60 .na
61 61 \fB\fB--metaphysical\fR\fR
62 62 .ad
63 63 .RS 18n
64 64 Follow command argument symbolic links, otherwise do not follow.
65 65 .RE
66 66
67 67 .sp
68 68 .ne 2
69 69 .na
70 70 \fB\fB--physical\fR\fR
71 71 .ad
72 72 .RS 18n
73 73 Do not follow symbolic links.
74 74 .RE
75 75
76 76 .SH OPTIONS
77 77 .sp
78 78 .LP
79 79 The following options are supported for \fB/usr/bin/sum\fR:
80 80 .sp
81 81 .ne 2
82 82 .na
83 83 \fB\fB-a\fR\fR
84 84 .ad
85 85 .br
86 86 .na
87 87 \fB\fB--all\fR\fR
88 88 .ad
89 89 .sp .6
90 90 .RS 4n
91 91 List the checksum for all files. Use with \fB--total\fR to list both individual
92 92 and total checksums and block counts.
93 93 .RE
94 94
95 95 .sp
96 96 .ne 2
97 97 .na
98 98 \fB\fB-b\fR\fR
99 99 .ad
100 100 .br
101 101 .na
102 102 \fB\fB--binary\fR\fR
103 103 .ad
104 104 .sp .6
105 105 .RS 4n
106 106 Read files in binary mode. This is the default.
107 107 .RE
108 108
109 109 .sp
110 110 .ne 2
111 111 .na
112 112 \fB\fB-B\fR\fR
113 113 .ad
114 114 .br
115 115 .na
116 116 \fB\fB--scale=scale\fR\fR
117 117 .ad
118 118 .sp .6
119 119 .RS 4n
120 120 Block count scale (bytes per block) override for methods that include size in
121 121 the output. The default is method-specific.
122 122 .RE
123 123
124 124 .sp
125 125 .ne 2
126 126 .na
127 127 \fB\fB-c\fR\fR
128 128 .ad
129 129 .br
130 130 .na
131 131 \fB\fB--check\fR\fR
132 132 .ad
133 133 .sp .6
134 134 .RS 4n
135 135 Each file is interpreted as the output from a previous sum. If \fB--header\fR
136 136 or \fB--permissions\fR was specified in the previous sum then the checksum
137 137 method is automatically determined, otherwise \fB--method\fR must be specified.
138 138 The listed checksum is compared with the current value and a warning is issued
139 139 for each file that does not match. If file was generated by
140 140 \fB--permissions\fR, then the file mode, user and group are also checked. Empty
141 141 lines, lines starting with #<space>, or the line # are ignored. Lines
142 142 containing no blanks are interpreted as [no]name[=\fIvalue\fR] options:
143 143 .sp
144 144 .ne 2
145 145 .na
146 146 \fB\fBmethod=name\fR\fR
147 147 .ad
148 148 .sp .6
149 149 .RS 4n
150 150 Checksum method to apply to subsequent lines.
151 151 .RE
152 152
153 153 .sp
154 154 .ne 2
155 155 .na
156 156 \fB\fBpermissions\fR\fR
157 157 .ad
158 158 .sp .6
159 159 .RS 4n
160 160 Subsequent lines were generated with \fB--permissions\fR.
161 161 .RE
162 162
163 163 .RE
164 164
165 165 .sp
166 166 .ne 2
167 167 .na
168 168 \fB\fB-h\fR\fR
169 169 .ad
170 170 .br
171 171 .na
172 172 \fB\fB--header\fR\fR
173 173 .ad
174 174 .sp .6
175 175 .RS 4n
176 176 Print the checksum method as the first output line. Used with \fB--check\fR and
177 177 \fB--permissions\fR.
178 178 .RE
179 179
180 180 .sp
181 181 .ne 2
182 182 .na
183 183 \fB\fB-l\fR\fR
184 184 .ad
185 185 .br
186 186 .na
187 187 \fB\fB--list\fR\fR
188 188 .ad
189 189 .sp .6
190 190 .RS 4n
191 191 Each file is interpreted as a list of files, one per line, that is checksummed.
192 192 .RE
193 193
194 194 .sp
195 195 .ne 2
196 196 .na
197 197 \fB\fB-p\fR\fR
198 198 .ad
199 199 .br
200 200 .na
201 201 \fB\fB--permissions\fR\fR
202 202 .ad
203 203 .sp .6
204 204 .RS 4n
205 205 If \fB--check\fR is not specified then list the file mode, user and group
206 206 between the checksum and path. User and group matching the caller are output as
207 207 -. If \fB--check\fR is specified then the mode, user and group for each path in
208 208 file are updated if necessary to match those in file. A warning is printed on
209 209 the standard error for each changed file.
210 210 .RE
211 211
212 212 .sp
213 213 .ne 2
214 214 .na
215 215 \fB\fB-R\fR\fR
216 216 .ad
217 217 .br
218 218 .na
219 219 \fB\fB--recursive\fR\fR
220 220 .ad
221 221 .sp .6
222 222 .RS 4n
223 223 Recursively checksum the contents of directories.
224 224 .RE
225 225
226 226 .sp
227 227 .ne 2
228 228 .na
229 229 \fB\fB-t\fR\fR
230 230 .ad
231 231 .br
232 232 .na
233 233 \fB\fB--total\fR\fR
234 234 .ad
235 235 .sp .6
236 236 .RS 4n
237 237 List only the total checksum and block count of all files. \fB--all\fR
238 238 \fB--total\fR lists each checksum and the total. The total checksum and block
239 239 count may be different from the checksum and block count of the catenation of
240 240 all files due to partial blocks that may occur when the files are treated
241 241 separately.
242 242 .RE
243 243
244 244 .sp
|
↓ open down ↓ |
244 lines elided |
↑ open up ↑ |
245 245 .ne 2
246 246 .na
247 247 \fB\fB-T\fR\fR
248 248 .ad
249 249 .br
250 250 .na
251 251 \fB\fB--text\fR\fR
252 252 .ad
253 253 .sp .6
254 254 .RS 4n
255 -Read files in text mode (for example, treat \r\n as \n).
255 +Read files in text mode (for example, treat \er\en as \en).
256 256 .RE
257 257
258 258 .sp
259 259 .ne 2
260 260 .na
261 261 \fB\fB-w\fR\fR
262 262 .ad
263 263 .br
264 264 .na
265 265 \fB\fB--warn\fR\fR
266 266 .ad
267 267 .sp .6
268 268 .RS 4n
269 269 Warn about invalid \fB--check\fR lines. On by default; \fB-w\fR means
270 270 \fB--nowarn\fR.
271 271 .RE
272 272
273 273 .sp
274 274 .ne 2
275 275 .na
276 276 \fB\fB-x\fR\fR
277 277 .ad
278 278 .br
279 279 .na
280 280 \fB\fB--method|algorithm=method\fR\fR
281 281 .ad
282 282 .sp .6
283 283 .RS 4n
284 284 Specifies the checksum method to apply. Parenthesized method options are
285 285 readonly implementation details.
286 286 .sp
287 287 .ne 2
288 288 .na
289 289 \fB\fBatt\fR|\fBsys5\fR|\fBs5\fR|\fBdefault\fR\fR
290 290 .ad
291 291 .sp .6
292 292 .RS 4n
293 293 The system 5 release 4 checksum. This is the default for sum when \fBgetconf\fR
294 294 \fBUNIVERSE\fR is \fBatt\fR. This is the only true sum; all of the other
295 295 methods are order dependent.
296 296 .RE
297 297
298 298 .sp
299 299 .ne 2
300 300 .na
301 301 \fB\fBast4\fR|\fB32x4\fR|\fBtw\fR\fR
302 302 .ad
303 303 .sp .6
304 304 .RS 4n
305 305 The \fBast\fR 128 bit \fBPRNG\fR hash generated by catenating 4 separate 32 bit
306 306 \fBPNRG\fR hashes. The block count is not printed.
307 307 .RE
308 308
309 309 .sp
310 310 .ne 2
311 311 .na
312 312 \fB\fBbsd\fR|\fBucb\fR\fR
313 313 .ad
314 314 .sp .6
315 315 .RS 4n
316 316 The BSD checksum.
317 317 .RE
318 318
319 319 .sp
320 320 .ne 2
321 321 .na
322 322 \fB\fBcrc\fR\fR
323 323 .ad
324 324 .sp .6
325 325 .RS 4n
326 326 32 bit CRC (cyclic redundancy check).
327 327 .sp
328 328 .ne 2
329 329 .na
330 330 \fB\fBpolynomial\fR=\fImask\fR\fR
331 331 .ad
332 332 .sp .6
333 333 .RS 4n
334 334 The 32 bit \fBcrc\fR polynomial bitmask with implicit bit 32. The default value
335 335 is 0xedb88320.
336 336 .RE
337 337
338 338 .sp
339 339 .ne 2
340 340 .na
341 341 \fB\fBdone\fR[=\fInumber\fR]\fR
342 342 .ad
343 343 .sp .6
344 344 .RS 4n
345 345 XOR the final \fBcrc\fR value with number. 0xffffffff is used if number is
346 346 omitted. The option value may be omitted. The default value is 0.
347 347 .RE
348 348
349 349 .sp
350 350 .ne 2
351 351 .na
352 352 \fB\fBinit\fR[=\fInumber\fR]\fR
353 353 .ad
354 354 .sp .6
355 355 .RS 4n
356 356 The initial \fBcrc\fR value. 0xffffffff is used if number is omitted. The
357 357 option value may be omitted. The default value is 0.
358 358 .RE
359 359
360 360 .sp
361 361 .ne 2
362 362 .na
363 363 \fB\fBrotate\fR\fR
364 364 .ad
365 365 .sp .6
366 366 .RS 4n
367 367 XOR each input character with the high order \fBcrc\fR byte (instead of the low
368 368 order).
369 369 .RE
370 370
371 371 .sp
372 372 .ne 2
373 373 .na
374 374 \fB\fBsize\fR[=\fInumber\fR]\fR
375 375 .ad
376 376 .sp .6
377 377 .RS 4n
378 378 Include the total number of bytes in the crc. number, if specified, is first
379 379 XOR'd into the size. The option value may be omitted. The default value is 0.
380 380 .RE
381 381
382 382 .RE
383 383
384 384 .sp
385 385 .ne 2
386 386 .na
387 387 \fB\fBprng\fR\fR
388 388 .ad
389 389 .sp .6
390 390 .RS 4n
391 391 32 bit \fBPRNG\fR (pseudo random number generator) hash.
392 392 .sp
393 393 .ne 2
394 394 .na
395 395 \fB\fBmpy\fR=\fInumber\fR\fR
396 396 .ad
397 397 .RS 17n
398 398 The 32 bit \fBPRNG\fR multiplier. The default value is 0x01000193.
399 399 .RE
400 400
401 401 .sp
402 402 .ne 2
403 403 .na
404 404 \fB\fBadd\fR=\fInumber\fR\fR
405 405 .ad
406 406 .RS 17n
407 407 The 32 bit \fBPRNG\fR addend. The default value is 0.
408 408 .RE
409 409
410 410 .sp
411 411 .ne 2
412 412 .na
413 413 \fB\fBinit\fR[=\fInumber\fR]\fR
414 414 .ad
415 415 .RS 17n
416 416 The \fBPRNG\fR initial value. 0xffffffff is used if number is omitted. The
417 417 option value may be omitted. The default value is 0x811c9dc5.
418 418 .RE
419 419
420 420 .RE
421 421
422 422 .sp
423 423 .ne 2
424 424 .na
425 425 \fB\fBmd4\fR|\fBMD4\fR\fR
426 426 .ad
427 427 .sp .6
428 428 .RS 4n
429 429 \fBRFC1320\fR \fBMD4\fR message digest. Cryptographically weak. The block count
430 430 is not printed. (version) \fBmd4\fR (\fBsolaris\fR \fB-lmd\fR) 2005-07-26
431 431 .RE
432 432
433 433 .sp
434 434 .ne 2
435 435 .na
436 436 \fB\fBmd5\fR|\fBMD5\fR\fR
437 437 .ad
438 438 .sp .6
439 439 .RS 4n
440 440 \fBRFC1321\fR \fBMD5\fR message digest. Cryptographically weak. The block count
441 441 is not printed. (version) \fBmd5\fR (\fBsolaris\fR \fB-lmd\fR) 2005-07-26
442 442 .RE
443 443
444 444 .sp
445 445 .ne 2
446 446 .na
447 447 \fB\fBsha1\fR|\fBSHA1\fR|\fBsha-1\fR|\fBSHA-1\fR\fR
448 448 .ad
449 449 .sp .6
450 450 .RS 4n
451 451 \fBRFC3174\fR / \fBFIPS 180-1\fR \fBSHA-1\fR secure hash algorithm 1.
452 452 Cryptographically weak. The block count is not printed. (version) \fBsha1\fR
453 453 (\fBsolaris\fR \fB-lmd\fR) 2005-07-26
454 454 .RE
455 455
456 456 .sp
457 457 .ne 2
458 458 .na
459 459 \fB\fBsha256\fR|\fBsha-256\fR|\fBSHA256\fR|\fBSHA-256\fR\fR
460 460 .ad
461 461 .sp .6
462 462 .RS 4n
463 463 \fBFIPS 180-2\fR \fBSHA256\fR secure hash algorithm. The block count is not
464 464 printed. (version) \fBsha256\fR (\fBsolaris\fR \fB-lmd\fR) 2005-07-26
465 465 .RE
466 466
467 467 .sp
468 468 .ne 2
469 469 .na
470 470 \fB\fBsha384\fR|\fBsha-384\fR|\fBSHA384\fR|\fBSHA-384\fR\fR
471 471 .ad
472 472 .sp .6
473 473 .RS 4n
474 474 \fBFIPS 180-2\fR \fBSHA384\fR secure hash algorithm. The block count is not
475 475 printed. (version) \fBsha384\fR (\fBsolaris\fR \fB-lmd\fR) 2005-07-26
476 476 .RE
477 477
478 478 .sp
479 479 .ne 2
480 480 .na
481 481 \fB\fBsha512\fR|\fBsha-512\fR|\fBSHA512\fR|\fBSHA-512\fR\fR
482 482 .ad
483 483 .sp .6
484 484 .RS 4n
485 485 \fBFIPS 180-2\fR \fBSHA512\fR secure hash algorithm. The block count is not
486 486 printed. (version) \fBsha512\fR (\fBsolaris\fR \fB-lmd\fR) 2005-07-26
487 487 .RE
488 488
489 489 .sp
490 490 .ne 2
491 491 .na
492 492 \fB\fBposix\fR|\fBcksum\fR|\fBstd\fR|\fBstandard\fR\fR
493 493 .ad
494 494 .sp .6
495 495 .RS 4n
496 496 The \fBposix 1003.2-1992\fR 32 bit \fBcrc\fR checksum. This is the default
497 497 \fBcksum\fR(1) method. Shorthand for \fBcrc-0x04c11db7-rotate-done-size\fR.
498 498 .RE
499 499
500 500 .sp
501 501 .ne 2
502 502 .na
503 503 \fB\fBzip\fR\fR
504 504 .ad
505 505 .sp .6
506 506 .RS 4n
507 507 The \fBzip\fR(1) \fBcrc\fR. Shorthand for \fBcrc-0xedb88320-init-done\fR.
508 508 .RE
509 509
510 510 .sp
511 511 .ne 2
512 512 .na
513 513 \fB\fBfddi\fR\fR
514 514 .ad
515 515 .sp .6
516 516 .RS 4n
517 517 The \fBFDDI\fR \fBcrc\fR. Shorthand for
518 518 \fBcrc-0xedb88320-size\fR=\fB0xcc55cc55\fR.
519 519 .RE
520 520
521 521 .sp
522 522 .ne 2
523 523 .na
524 524 \fB\fBfnv\fR|\fBfnv1\fR\fR
525 525 .ad
526 526 .sp .6
527 527 .RS 4n
528 528 The \fBFowler-Noll-Vo\fR 32 bit \fBPRNG\fR hash with non-zero initializer
529 529 (\fBFNV-1\fR). Shorthand for \fBprng-0x01000193-init\fR=\fB0x811c9dc5\fR.
530 530 .RE
531 531
532 532 .sp
533 533 .ne 2
534 534 .na
535 535 \fB\fBast\fR|\fBstrsum\fR\fR
536 536 .ad
537 537 .sp .6
538 538 .RS 4n
539 539 The \fBast\fR \fBstrsum\fR \fBPRNG\fR hash. Shorthand for
540 540 \fBprng-0x63c63cd9-add\fR=\fB0x9c39c33d\fR.
541 541 .RE
542 542
543 543 .RE
544 544
545 545 .sp
546 546 .ne 2
547 547 .na
548 548 \fB\fB-L\fR\fR
549 549 .ad
550 550 .br
551 551 .na
552 552 \fB\fB--logical\fR|\fBfollow\fR\fR
553 553 .ad
554 554 .sp .6
555 555 .RS 4n
556 556 Follow symbolic links when traversing directories. The default is determined by
557 557 \fBgetconf\fR \fBPATH_RESOLVE\fR.
558 558 .RE
559 559
560 560 .sp
561 561 .ne 2
562 562 .na
563 563 \fB\fB-H\fR\fR
564 564 .ad
565 565 .br
566 566 .na
567 567 \fB\fB--metaphysical\fR\fR
568 568 .ad
569 569 .sp .6
570 570 .RS 4n
571 571 Follow command argument symbolic links, otherwise do not follow symbolic links
572 572 when traversing directories. The default is determined by \fBgetconf\fR
573 573 \fBPATH_RESOLVE\fR.
574 574 .RE
575 575
576 576 .sp
577 577 .ne 2
578 578 .na
579 579 \fB\fB-P\fR\fR
580 580 .ad
581 581 .br
582 582 .na
583 583 \fB\fB--physical\fR\fR
584 584 .ad
585 585 .sp .6
586 586 .RS 4n
587 587 Do not follow symbolic links when traversing directories. The default is
588 588 determined by \fBgetconf\fR \fBPATH_RESOLVE\fR.
589 589 .RE
590 590
591 591 .sp
592 592 .ne 2
593 593 .na
594 594 \fB\fB-r\fR\fR
595 595 .ad
596 596 .br
597 597 .na
598 598 \fB\fB--bsd\fR\fR
599 599 .ad
600 600 .sp .6
601 601 .RS 4n
602 602 Equivalent to \fB--method=bsd\fR \fB--scale=512\fR for compatibility with other
603 603 sum implementations.
604 604 .RE
605 605
606 606 .sp
607 607 .ne 2
608 608 .na
609 609 \fB\fB-s\fR\fR
610 610 .ad
611 611 .br
612 612 .na
613 613 \fB\fB--sysv\fR\fR
614 614 .ad
615 615 .sp .6
616 616 .RS 4n
617 617 Equivalent to \fB--method=sys5\fR for compatibility with other sum
618 618 implementations.
619 619 .RE
620 620
621 621 .sp
622 622 .ne 2
623 623 .na
624 624 \fB\fB-S\fR\fR
625 625 .ad
626 626 .br
627 627 .na
628 628 \fB\fB--silent\fR|\fBstatus\fR\fR
629 629 .ad
630 630 .sp .6
631 631 .RS 4n
632 632 No output for \fB--check\fR; 0 exit status means all sums matched, non-0 means
633 633 at least one sum failed to match. Ignored for \fB--permissions\fR.
634 634 .RE
635 635
636 636 .SH OPERANDS
637 637 .sp
638 638 .LP
639 639 The following operands are supported:
640 640 .sp
641 641 .ne 2
642 642 .na
643 643 \fB\fIfile\fR\fR
644 644 .ad
645 645 .RS 8n
646 646 A path name of a file. If no files are named, the standard input is used.
647 647 .RE
648 648
649 649 .SH USAGE
650 650 .sp
651 651 .LP
652 652 See \fBlargefile\fR(5) for the description of the behavior of \fBsum\fR when
653 653 encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
654 654 .SH ENVIRONMENT VARIABLES
655 655 .sp
656 656 .LP
657 657 See \fBenviron\fR(5) for descriptions of the following environment variables
658 658 that affect the execution of \fBsum\fR: \fBLC_CTYPE\fR, \fBLC_MESSAGES\fR, and
659 659 \fBNLSPATH\fR.
660 660 .SH EXIT STATUS
661 661 .sp
662 662 .LP
663 663 The following exit values are returned.
664 664 .sp
665 665 .ne 2
666 666 .na
667 667 \fB\fB0\fR\fR
668 668 .ad
669 669 .RS 6n
670 670 Successful completion.
671 671 .RE
672 672
673 673 .sp
674 674 .ne 2
675 675 .na
676 676 \fB\fB>0\fR\fR
677 677 .ad
678 678 .RS 6n
679 679 An error occurred.
680 680 .RE
681 681
682 682 .SH ATTRIBUTES
683 683 .sp
684 684 .LP
685 685 See \fBattributes\fR(5) for descriptions of the following attributes:
686 686 .sp
687 687
688 688 .sp
689 689 .TS
690 690 box;
691 691 c | c
692 692 l | l .
693 693 ATTRIBUTE TYPE ATTRIBUTE VALUE
694 694 _
695 695 CSI Enabled
696 696 .TE
697 697
698 698 .SH SEE ALSO
699 699 .sp
700 700 .LP
701 701 \fBcksum\fR(1), \fBgetconf\fR(1), \fBksh93\fR(1), \fBsum\fR(1B), \fBwc\fR(1),
702 702 \fBzip\fR(1) , \fBlibmd\fR(3LIB), \fBattributes\fR(5), \fBenviron\fR(5),
703 703 \fBlargefile\fR(5)
704 704 .SH DIAGNOSTICS
705 705 .sp
706 706 .LP
707 707 \fBRead error\fR is indistinguishable from end of file on most devices. Check
708 708 the block count.
709 709 .SH NOTES
710 710 .sp
711 711 .LP
712 712 Portable applications should use \fBcksum\fR(1). The default algorithm for this
713 713 command is defined in the POSIX standard and is identical across platforms.
714 714 .sp
715 715 .LP
716 716 \fBsum\fR and \fBusr/ucb/sum\fR (see \fBsum\fR(1B)) return different checksums.
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