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2 Busybox POSIX conformance table
4 See POSIX documentation (1003.1-2008) here:
5 http://www.opengroup.org/onlinepubs/9699919799/
6 And the complete list of all utilities that POSIX covers:
7 http://www.opengroup.org/onlinepubs/9699919799/idx/utilities.html
9 This listing is a work in progress, and currently only covers
10 tool options (not operands, environment variables, return codes, etc..).
11 For each option it is set if it (a) exists and (b) compliant to POSIX 2008.
12 Some options exist but there is no value in the 'compliant' column: that
13 means no one has yet bothered to make sure that the option does what it is
14 required to do.
16 -----------------------------------------------
18 POSIX Tools supported only as shell built-ins (ash shell):
19 alias, bg, cd, fg, getopts, hash, jobs, read, type, umask, ulimit,
20 unalias, wait, write
22 POSIX Tools not supported:
23 asa, at, batch, bc, c99, command, compress, csplit, ex, fc, file,
24 gencat, getconf, iconv, join, link, locale, localedef, lp, m4,
25 mailx, newgrp, nl, pathchk, pax, pr, qalter, qdel, qhold, qmove,
26 qmsg, qrerun, qrls, qselect, qsig, qstat, qsub, tabs, talk, tput,
27 unlink, uucp, uustat, uux
29 POSIX Tools not supported (DEVELOPMENT):
30 admin, cflow, ctags, cxref, delta, fort77, get, lex, make, nm, prs, rmdel,
31 sact, sccs, strip, unget, val, what, yacc
34 POSIX Tools supported:
36 Note: echo, printf, kill, pwd documented here as stand-alone applets,
37 not as ash built-ins.
40 ar POSIX options ********************* Failed to recognize zip & tar (did not compare to regular ar)
41 option | exists | compliant | remarks
42 -C | no | no |
43 -T | no | no |
44 -a | no | no |
45 -b | no | no |
46 -c | no | no |
47 -d | no | no |
48 -i | no | no |
49 -m | no | no |
50 -p | yes | |
51 -q | no | no |
52 -r | no | no |
53 -s | no | no |
54 -t | yes | |
55 -u | no | no |
56 -v | yes | |
57 -x | yes | |
58 ar Busybox specific options:
59 -o
61 awk POSIX options
62 option | exists | compliant | remarks
63 -F ERE | yes | |
64 -f progfile | yes | |
65 -v assignment | yes | |
66 awk Busybox specific options: None
68 basename POSIX options: None
69 basename Busybox specific options: None
71 cal POSIX options: None
72 cal Busybox specific options:
73 -y, -j
75 cat POSIX options
76 option | exists | compliant | remarks
77 -u | yes | no | option is ignored
78 cat Busybox specific options: None
80 chgrp POSIX options
81 option | exists | compliant | remarks
82 -H | yes | |
83 -L | yes | |
84 -P | yes | |
85 -R | yes | |
86 -h | yes | |
87 chgrp Busybox specific options:
88 -f, -c, -v
90 chmod POSIX options
91 option | exists | compliant | remarks
92 -R | yes | yes |
93 chmod Busybox specific options:
94 -f, -v, -c
96 chown POSIX options *********************************************
97 option | exists | compliant | remarks
98 -H | yes | | It seems like all flags are supported (according to printout), but
99 -L | yes | | it fails to work on my machine
100 -P | yes | |
101 -R | yes | |
102 -h | yes | |
103 chown Busybox specific options:
104 -f, -c, -v
106 cksum POSIX options: None
107 cksum Busybox specific options: None
109 cmp POSIX options
110 option | exists | compliant | remarks
111 -l | yes | yes |
112 -s | yes | yes |
113 cmp Busybox specific options:
116 comm POSIX options
117 option | exists | compliant | remarks
118 -1 | yes | yes |
119 -2 | yes | yes |
120 -3 | yes | yes |
121 comm Busybox specific options: None
123 cp POSIX options
124 option | exists | compliant | remarks
125 -H | yes | yes |
126 -L | yes | yes |
127 -P | yes | yes |
128 -R | yes | yes |
129 -f | yes | yes |
130 -i | yes | yes |
131 -p | yes | yes |
132 cp Busybox specific options:
133 -d, -a, -s, -c, -r, -l
135 crontab POSIX options
136 option | exists | compliant | remarks
137 -e | yes | |
138 -l | yes | |
139 -r | yes | |
140 crontab Busybox specific options:
141 -u, -c
143 cut POSIX options
144 option | exists | compliant | remarks
145 -b list | yes | yes |
146 -c list | yes | yes |
147 -d delim | yes | yes |
148 -f list | yes | yes |
149 -n | yes | yes |
150 -s | yes | yes |
151 cut Busybox specific options: None
153 date POSIX options
154 option | exists | compliant | remarks
155 -u | yes | yes |
156 date Busybox specific options:
157 -I[SPEC], -d TIME, -r FILE, -R, -D FMT
159 dd POSIX options:
160 option | exists | compliant | remarks
161 if | yes | |
162 of | yes | |
163 ibs | yes | |
164 obs | yes | |
165 bs | yes | |
166 cbs | no | no |
167 skip | yes | |
168 seek | yes | |
169 count | yes | |
170 conv=ascii | no | no |
171 conv=ebcdic | no | no |
172 conv=ibm | no | no |
173 conv=block | no | no |
174 conv=unblock | no | no |
175 conv=lcase | no | no |
176 conv=ucase | no | no |
177 conv=swap | no | no |
178 conv=noerror | yes | |
179 conv=notrunc | yes | |
180 conv=sync | yes | |
181 dd compatibility options:
182 conv=fsync | yes | |
183 iflag=skip_bytes| yes | |
184 iflag=fullblock | yes | |
185 oflag=seek_bytes| yes | |
186 oflag=append | yes | |
188 df POSIX options
189 option | exists | compliant | remarks
190 -P | yes | yes |
191 -k | yes | yes |
192 -t | no | no |
193 df Busybox specific options:
194 -a, -m, -B SIZE, -i, -h
195 Remark:
196 - It seems that GNU df does not round percents up in its output (thus its results are a bit different)
198 diff POSIX options
199 option | exists | compliant | remarks
200 -C n | no | no |
201 -U n | yes | |
202 -b | yes | |
203 -c | no | no |
204 -e | no | no |
205 -f | no | no |
206 -r | yes | |
207 -u | no | no |
208 diff Busybox specific options:
209 -d, -a, -s, -t, -L, -N, -i, -T, -w, -q, -S
211 dirname POSIX options: None
212 dirname Busybox specific options: None
214 du POSIX options
215 option | exists | compliant | remarks
216 -H | yes | |
217 -L | yes | |
218 -a | yes | |
219 -k | yes | |
220 -s | yes | |
221 -x | yes | |
222 du Busybox specific options:
223 -c, -m, -h, -d N, -l
226 echo POSIX options: None
227 option | exists | compliant | remarks
228 -n | yes | yes | The result of -n is "implementation-defined"
229 echo Busybox specific options:
230 -e, -E
232 ed POSIX options
233 option | exists | compliant | remarks
234 -p string | no | no |
235 -s | no | no |
236 ed Busybox specific options: None
238 env POSIX options
239 option | exists | compliant | remarks
240 -i | no | no |
241 env Busybox specific options:
242 -u, -, -i
244 expand POSIX options
245 option | exists | compliant | remarks
246 -t tablist | yes | yes |
247 expand Busybox specific options:
248 --tabs=N, -i, --initial
250 expr POSIX operations:
251 option | exists | compliant | remarks
252 | | yes | yes |
253 & | yes | yes |
254 = | yes | yes |
255 > | yes | yes |
256 >= | yes | yes |
257 <= | yes | yes |
258 < | yes | yes |
259 != | yes | yes |
260 + | yes | yes |
261 - | yes | yes |
262 * | yes | yes |
263 / | yes | yes |
264 % | yes | yes |
265 : | yes | yes |
266 (expr) | yes | yes |
267 integer | yes | yes |
268 string | yes | yes |
269 expr Busybox specific operations:
270 match, substr, index, length, quote
272 false POSIX options: None
273 false Busybox specific options: None
275 find POSIX options
276 option | exists | compliant | remarks
277 -H | no | no |
278 -L | no | no |
279 find Busybox specific options:
280 -group NAME, -mtime DAYS, -print, -maxdepth N, -exec CMD ARG ;, -newer FILE, -context, -iname PATTERN, -follow, -depth, -xdev, -inum N, -type X, -print0, -mindepth N, -mmin MINS, -regex PATTERN, -prune, -path PATTERN, -user NAME, -delete, -perm NNN, -name PATTERN, -size N[bck]
282 fold POSIX options
283 option | exists | compliant | remarks
284 -b | yes | yes |
285 -s | yes | yes |
286 -w width | yes | yes |
287 fold Busybox specific options: None
289 fuser POSIX options
290 option | exists | compliant | remarks
291 -c | no | no |
292 -f | no | no |
293 -u | no | no |
294 fuser Busybox specific options:
295 -m, -k, -4, -SIGNAL, -6, -s
297 grep POSIX options
298 option | exists | compliant | remarks
299 -E | yes | |
300 -F | yes | |
301 -c | yes | |
302 -e pattern_list | yes | |
303 -f pattern_file | yes | |
304 -i | yes | |
305 -l | yes | |
306 -n | yes | |
307 -q | yes | |
308 -s | yes | |
309 -v | yes | |
310 -x | no | no |
311 grep Busybox specific options:
312 -A, -C, -B, -L, -H, -o, -h, -w, -r, -z, -m MAX
314 head POSIX options
315 option | exists | compliant | remarks
316 -n number | yes | yes |
317 head Busybox specific options:
318 -v, -c NUM, -q
320 id POSIX options
321 option | exists | compliant | remarks
322 -G | yes | yes |
323 -g | yes | yes |
324 -n | yes | yes |
325 -r | yes | yes |
326 -u | yes | yes |
327 id Busybox specific options:
328 -Z
330 ipcrm POSIX options
331 option | exists | compliant | remarks
332 -M shmkey | no | no |
333 -Q msgkey | no | no |
334 -S semkey | no | no |
335 -m shmid | no | no |
336 -q msgid | no | no |
337 -s semid | no | no |
338 ipcrm Busybox specific options:
339 -mM, -qQ, -sS
341 ipcs POSIX options
342 option | exists | compliant | remarks
343 -a | yes | |
344 -b | no | no |
345 -c | yes | |
346 -m | yes | |
347 -o | no | no |
348 -p | yes | |
349 -q | yes | |
350 -s | yes | |
351 -t | yes | |
352 ipcs Busybox specific options:
353 -l, -i, -u
355 kill POSIX options
356 option | exists | compliant | remarks
357 -l | yes | yes |
358 -s signal_name | yes | yes |
359 -signal_name | yes | yes |
360 -signal_number | yes | yes |
361 kill Busybox specific options:
362 -q, -o
364 ln POSIX options
365 option | exists | compliant | remarks
366 -L | no | no |
367 -P | no | no |
368 -f | yes | yes |
369 -s | yes | yes |
370 ln Busybox specific options:
371 -S suf, -n, -b
373 logger POSIX options: None
374 logger Busybox specific options:
375 -p PRIO, -t TAG, -s
377 logname POSIX options: None
378 logname Busybox specific options: None
380 ls POSIX options
381 option | exists | compliant | remarks
382 -1 | yes | yes |
383 -A | yes | yes |
384 -C | yes | yes |
385 -F | yes | yes | And more: '=' for sockets (not defined by POSIX)
386 -H | no | no |
387 -L | yes | yes | But coloring may be wrong (at least POSIX does not require correct colors :) )
388 -R | yes | yes |
389 -S | yes | yes |
390 -a | yes | yes |
391 -c | yes | no | Sorts output with '-l' (should only show ctime with '-l', and sort only with '-t')
392 -d | yes | no | When invoked together with '-L' should read symbolic links, and doesn't
393 -f | no | no |
394 -g | no | no |
395 -i | yes | yes |
396 -k | yes | no | Does something completely unrelated! (Lists security context instead of specifying block size)
397 -l | yes | yes |
398 -m | no | no |
399 -n | yes | no | Works correctly only together with '-l' (but POSIX requires '-l' to be implicitly assumed)
400 -o | no | no |
401 -p | yes | yes |
402 -q | no | no |
403 -r | yes | yes |
404 -s | yes | yes |
405 -t | yes | yes |
406 -u | yes | yes |
407 -x | yes | yes |
408 ls Busybox specific options:
409 --color, -T NUM, -K, -X, -Z, -e, -h, -v, -w NUM
411 man POSIX options
412 option | exists | compliant | remarks
413 -k | no | no |
414 man Busybox specific options:
415 -a Display all pages
418 mesg POSIX options: None
419 mesg Busybox specific options: None
421 mkdir POSIX options
422 option | exists | compliant | remarks
423 -m mode | yes | yes |
424 -p | yes | yes |
425 mkdir Busybox specific options:
426 -Z
428 mkfifo POSIX options
429 option | exists | compliant | remarks
430 -m mode | yes | yes |
431 mkfifo Busybox specific options:
432 -Z
434 more POSIX options
435 option | exists | compliant | remarks
436 -c | no | no |
437 -e | no | no |
438 -i | no | no |
439 -n number | no | no |
440 -p command | no | no |
441 -s | no | no |
442 -t tagstring | no | no |
443 -u | no | no |
444 more Busybox specific options: None
446 mv POSIX options
447 option | exists | compliant | remarks
448 -f | yes | yes |
449 -i | yes | yes |
450 mv Busybox specific options: None
452 nice POSIX options
453 option | exists | compliant | remarks
454 -n increment | yes | yes |
455 nice Busybox specific options: None
457 nohup POSIX options: None
458 nohup Busybox specific options: None
460 od POSIX options
461 option | exists | compliant | remarks
462 -A address_base | no | no |
463 -N count | no | no |
464 -b | no | no |
465 -c | no | no |
466 -d | no | no |
467 -j skip | no | no |
468 -o | no | no |
469 -s | no | no |
470 -t type_string | no | no |
471 -v | no | no |
472 -x | no | no |
473 od Busybox specific options: None
475 paste POSIX options
476 option | exists | compliant | remarks
477 -d list | yes | yes |
478 -s | yes | yes |
479 paste Busybox specific options: None
481 patch POSIX options
482 option | exists | compliant | remarks
483 -D define | no | no |
484 -N | no | no |
485 -R | yes | yes |
486 -b | no | no |
487 -c | no | no |
488 -d dir | no | no |
489 -e | no | no |
490 -i patchfile | yes | yes |
491 -l | no | no |
492 -n | no | no |
493 -o outfile | no | no |
494 -p num | yes | yes |
495 -r rejectfile | no | no |
496 -u | no | no |
497 patch Busybox specific options: None
499 printf POSIX options: None
500 printf Busybox specific options: None
502 ps POSIX options
503 option | exists | compliant | remarks
504 -A | no | no |
505 -G grouplist | no | no |
506 -U userlist | no | no |
507 -a | no | no |
508 -d | no | no |
509 -e | no | no |
510 -f | no | no |
511 -g grouplist | no | no |
512 -l | no | no |
513 -n namelist | no | no |
514 -o format | yes | no | not supported: ruser, group, rgroup, pcpu
515 -p proclist | no | no |
516 -t termlist | no | no |
517 -u userlist | no | no |
518 ps Busybox specific options: None
520 pwd POSIX options
521 option | exists | compliant | remarks
522 -L | no | no |
523 -P | no | no |
524 pwd Busybox specific options: None
526 renice POSIX options
527 option | exists | compliant | remarks
528 -g | yes | yes |
529 -n increment | yes | yes | Note POSIX allows only to run with this option (busybox also allows to run without '-n' and set niceness directly)
530 -p | yes | yes |
531 -u | yes | yes |
532 renice Busybox specific options: None
534 rm POSIX options
535 option | exists | compliant | remarks
536 -R | yes | yes |
537 -f | yes | yes |
538 -i | yes | yes |
539 -r | yes | yes |
540 rm Busybox specific options: None
542 rmdir POSIX options
543 option | exists | compliant | remarks
544 -p | yes | yes |
545 rmdir Busybox specific options:
546 --parents
548 sed POSIX options
549 option | exists | compliant | remarks
550 -e script | yes | |
551 -f script_file | yes | |
552 -n | yes | |
553 sed Busybox specific options:
554 -i, -r
556 sh POSIX options
557 option | exists | compliant | remarks
558 -c | no | no |
559 -i | no | no |
560 -s | no | no |
561 sh Busybox specific options: None
563 sleep POSIX options: None
564 sleep Busybox specific options: None
566 sort POSIX options
567 option | exists | compliant | remarks
568 -C | no | no |
569 -b | yes | yes |
570 -c | yes | yes |
571 -d | yes | yes |
572 -f | yes | yes |
573 -i | yes | yes | But is not like GNU sort, which isn't! (try to sort 'a\nA\nB\nb' with and without -f)
574 -k keydef | yes | |
575 -m | no | no |
576 -n | yes | yes |
577 -o output | yes | yes |
578 -r | yes | yes |
579 -t char | yes | |
580 -u | yes | yes |
581 sort Busybox specific options:
582 -mST, -g, -M, -s, -z
584 split POSIX options
585 option | exists | compliant | remarks
586 -a suffix_length | yes | yes |
587 -b n | yes | yes |
588 -b nk | yes | yes |
589 -b nm | yes | yes |
590 -l line_count | yes | yes |
591 split Busybox specific options: None
593 strings POSIX options
594 option | exists | compliant | remarks
595 -a | yes | yes |
596 -n number | yes | yes |
597 -t format | no | no |
598 strings Busybox specific options:
599 -o, -f
601 stty POSIX options
602 option | exists | compliant | remarks
603 -a | yes | yes |
604 -g | yes | yes |
605 stty Busybox specific options:
606 -F DEVICE
608 tail POSIX options
609 option | exists | compliant | remarks
610 -c number | yes | yes |
611 -f | yes | yes |
612 -n number | yes | yes |
613 tail Busybox specific options:
614 -v, -q, -s SEC
616 tee POSIX options
617 option | exists | compliant | remarks
618 -a | yes | yes |
619 -i | yes | yes |
620 tee Busybox specific options: None
622 test POSIX options: None
623 test Busybox specific options: None
625 time POSIX options
626 option | exists | compliant | remarks
627 -p | no | no |
628 time Busybox specific options:
629 -v
631 touch POSIX options
632 option | exists | compliant | remarks
633 -a | no | no |
634 -c | yes | yes |
635 -d date_time | no | no |
636 -m | no | no |
637 -r ref_file | no | no |
638 -t time | no | no |
639 touch Busybox specific options: None
641 tr POSIX options
642 option | exists | compliant | remarks
643 -C | no | no |
644 -c | yes | yes |
645 -d | yes | yes |
646 -s | yes | yes |
647 tr Busybox specific options: None
649 true POSIX options: None
650 true Busybox specific options: None
652 tty POSIX options: None
653 tty Busybox specific options:
654 -s
656 uname POSIX options
657 option | exists | compliant | remarks
658 -a | yes | yes |
659 -m | yes | yes |
660 -n | yes | yes |
661 -r | yes | yes |
662 -s | yes | yes |
663 -v | yes | yes |
664 uname Busybox specific options:
665 -p
667 uncompress POSIX options
668 option | exists | compliant | remarks
669 -c | yes | yes |
670 -f | yes | yes |
671 -v | no | no |
672 uncompress Busybox specific options: None
674 unexpand POSIX options
675 option | exists | compliant | remarks
676 -a | yes | no | POSIX requires converting two or more spaces to tabs, busybox converts one or more spaces
677 -t tablist | yes | yes |
678 unexpand Busybox specific options:
679 --tabs=N, -f, --first-only, --all
681 uniq POSIX options
682 option | exists | compliant | remarks
683 -c | yes | yes |
684 -d | yes | yes |
685 -f fields | yes | yes |
686 -s chars | yes | yes |
687 -u | yes | yes |
688 uniq Busybox specific options:
689 -w N
691 uudecode POSIX options
692 option | exists | compliant | remarks
693 -o outfile | yes | no |
694 uudecode Busybox specific options: None
696 uuencode POSIX options
697 option | exists | compliant | remarks
698 -m | yes | yes |
699 uuencode Busybox specific options: None
701 vi POSIX options
702 option | exists | compliant | remarks
703 -R | yes | |
704 -c command | yes | |
705 -r | no | no |
706 -t tagstring | no | no |
707 -w size | no | no |
708 vi Busybox specific options:
709 -H
711 wc POSIX options
712 option | exists | compliant | remarks
713 -c | yes | yes |
714 -l | yes | yes |
715 -m | no | no |
716 -w | yes | yes |
717 wc Busybox specific options:
718 -L
720 who POSIX options
721 option | exists | compliant | remarks
722 -H | no | no |
723 -T | no | no |
724 -a | yes | no | just shows all
725 -b | no | no |
726 -d | no | no |
727 -l | no | no |
728 -m | no | no |
729 -p | no | no |
730 -q | no | no |
731 -r | no | no |
732 -s | no | no |
733 -t | no | no |
734 -u | no | no |
735 who Busybox specific options: None
737 xargs POSIX options
738 option | exists | compliant | remarks
739 -E eofstr | no | no |
740 -I replstr | no | no |
741 -L number | no | no |
742 -n number | yes | yes |
743 -p | yes | yes |
744 -s size | yes | yes |
745 -t | yes | yes |
746 -x | yes | yes |
747 xargs Busybox specific options:
748 -e[STR], -0, -r
750 zcat POSIX options: None
751 zcat Busybox specific options: None