Summary of command XPG4 conformity

Commands which conform fully to the XPG4 standards

asa, at, awk, basename, batch, bc, cal, cancel, cmp, comm, compress, cp, csplit, cut, dd, dirname, du, env, expand, expr, fold, getconf, head, join, locale, localedef, logger, logname, mesg, mkdir, mkfifo, mv, nice, nm, nohup, paste, patch, pathchk, pax, pr, printf, renice, rm, rmdir, sed, sleep, split, sum, tabs, talk, tee, time, tput, tr, tsort, tty, touch, uncompress, unexpand, uniq, uudecode, uuencode, wc, who, write, xargs, zcat

Commands which differ from the XPG4 standard

Most of the differences result from additional options.

POSIX command	Additional option(s)	Other differences
ar	-S, -V
cat	-s
chgrp	-h
chmod		When <perm> is specified then the entry of l (lock) and t (t bit) as well as u, g and o is supported in addition to the XPG4 standard.
chown	-h
cksum	-C
crontab	-l|-r|-e [user]
date	-a	The system clock can only be adjusted by seconds or fractions of seconds
df	-F, -n, -b, -c, -e, -g, -l, -v, -V, -o
diff	-a, -h, -i, -l. -n, -s, -t, -w, -D, -S
ed	-W
egrep	-b, -h
ex	-r, -L
fc	-s
fgrep	-b, -h
file	-c, -f, -h, -m
find	-follow, -fstype -local, -mount	+/-<num>(instead of <num> alone) is permitted for the options -links, -size, -atime, -ctime, -mtime and -size. A symbolic reference is also permitted for -type <char>.
gencat	-l, -m
grep	-b, -h, -r
iconv		Additional conversion between ISO646 and EDF03 (from ASCII 7-bit to EBCDIC).
id	-a[<user>]
lex	-V, -Q(y/n)
ln	-n	Additional syntax compared to XPG4 standard: ln -s <name><reference> ln -s <name>...<directory>
lp		The -m and -w options of the XPG4 standard are not supported.
lpstat		The -v option of the XPG4 standard is not supported. For the -u option you can only specify your own login name.
ls	-L, -b
mailx	-F, -i, -n -V	In send mode In read mode
make	-b, -d
man	-k, -x
more	-d, -f, +<char>, +<line_number>, +/-<pattern>	The -t option of the XPG4 standard is not supported.
nice		Has no effect on BS2000 task priorities
nl	-f type
od	-f, -D, -F, -O, -S, -X
ps	-c, -j, -s, -T
renice		Has no effect on BS2000 task priorities
sh		Built-in XPG4 functions in the shell: ., :, [<expr>], alias, bg, break, case, cd, command, continue, do, echo, else, eval, exec, exit, export, false, fc, fg, for, getopts, hash, if, jobs, kill, newgrp, pwd, read, readonly, return, set, shift, test, times, trap, true, type, ulimit, umask, unalias, unset, until, wait, while Other built-in functions in the shell: edt, let, print, typeset, whence
sort	-M, -T <tempdir>
strings	-o
tail	-r
tput	-S
uname	-p
uuname		Only the local system name is displayed.
vi	-r, -L
yacc	-V, -Q(y/n) y driver-file

Commands which are not (or no longer) defined in the XPG4 standard

POSIX command	Function
bs2cmd	execute BS2000 command
bs2cp	copy BS2000 files
bs2do	call BS2000 procedures from the POSX shell
bs2file	set BS2000 file attributes
bs2lp	send files to a printer
bs2pkey	set P keys
cpio	copy in and out
debug	debug POSIX programs
dumpfs	dump file system
edt, edtu	process file with EDT (BS2000)
fsck	check consistency of a file system and make corrections interactively
fsexpand	expand existing file systems
ftyp	define processing mode for BS2000 files
funzip	Filter for extracting from a ZIP archive in a pipe
fuser	display file users
hd	hex dump
info	online diagnostic tool
ipcrm	remove inter-process communication facilities
ipcs	inter-process communication status
last	display last logged in users
logrotate	change logging files of the syslog daemon
mkfs	make a filesystem
mknod	make an inode
mkpart	hard disk maintenance utility
mount	mount a file system
mountall	mount file systems
pdbl	set up and manage user-specific program cache
ping	send echo requests to network hosts
pkginfo	display information on software packages in POSIX
posdbl	manage POSIX loader
rcp	remote file copy
rmpart	remove partition
rsh	remote shell
show_pubset_export	show file systems affected by EXPORT-PUBSET
start_bs2fsd	start copy daemons
su	substitute user ID
sudo	Execute a command as another user
sync	flush system buffers
tar	file archiver
umount	unmount a file system
umountall	unmount file systems
unzip	list, test and extract compressed files in a ZIP archive
unzipsfx	Self-extracting stub for prepending to ZIP archives
visudo	Edit the sudoers file
zip	Package and compress (archive) files
zipcloak	Encrypt entries in a zipfile
zipgrep	Search files in a ZIP archive for lines matching a pattern
zipinfo	List detailed information about a ZIP archive
zipnote	Write the comments in zipfile to stdout, edit comments and rename files in zipfile
zipsplit	Split a zipfile into smaller zipfiles