Commands belonging to the POSIX shell

The POSIX shell comprises the basic shell (POSIX-BC) and the extended shell (POSIX-SH). It contains the POSIX commands found in the following table.

Entries in the Type column describe the command type:

bin blt scr

separate module built-in in the shell script

The column LFS describes whether the commands can process large POSIX files:

A S	(large file aware): uses large files correctly (large file safe): recognizes large files but rejects processing in a defined manner

The column L describes in which product library the command is delivered:

1 2 3 4 5

SINLIB.POSIX-BC.vvv.SHELL SINLIB.POSIX-BC.vvv.ROOT SINLIB.POSIX-BC.vvv.INET SINLIB.POSIX.BC.vvv.OSSW SINLIB.POSIX-SH.vvv

Name	Location	Type	L	Description	LFS
alias	/usr/bin	blt+scr	1	Define or display alias
ar	/usr/bin	bin	1	Administer libraries	S
asa	/usr/bin	bin	5	Convert control characters for positioning
at	/usr/bin	bin	5	Execute commands at a later date
awk	/usr/bin	bin	5	Programmable processing of text files	A
basename	/usr/bin	scr	1	Separate file name from path
batch	/usr/bin	scr	1	Execute commands at a later date
bc	/usr/bin	bin	5	Arithmetic language
bg	-	blt	1	Process jobs in background
bs2cmd	-	blt	1	Execute BS2000 command
bs2cp	/usr/bin	blt+bin	1	Copy BS2000 files	A
bs2do	/usr/bin	bin	1	Calling BS2000 procedures from POSIX
bs2file	/usr/bin	blt+bin	1	Define file attributes for BS2000 files
bs2lp	/usr/bin	bin	1	Print files
bs2pkey	/usr/bin	bin	1	Assign P keys
cal	/usr/bin	bin	5	Display calendar
cancel	/usr/bin	bin	5	Delete print jobs
cat	/usr/bin	blt+bin	1	Concatenate and output files	A
cd	/usr/bin	blt+scr	1	Change current directory	A
chgrp	/usr/bin	blt+bin	1	Change group number of file	A
chmod	/usr/bin	blt+bin	1	Change access rights	A
chown	/usr/bin	blt+bin	1	Change owner of file	A
cksum	/usr/bin	bin	5	Write checksums and file sizes	A
cmp	/usr/bin	bin	5	Compare files character by character	A
comm	/usr/bin	bin	5	Search for identical lines in two sorted files	A
command	/usr/bin	blt+scr	1	Execute simple command
compress	/usr/bin	bin	5	Compress files	A
cp	/sbin	blt+bin	1	Copy files	A
cp	/usr/bin	blt+bin	1	Copy files	A
cpio	/usr/bin	bin	1	Swap files and directories in and out	A
crontab	/usr/bin	bin	5	Execute commands at regular intervals
csplit	/usr/bin	bin	5	Split file according to specific criteria	S
cut	/usr/bin	bin	5	Cut bytes, characters or fields from the lines of a file	A
date	/usr/bin	blt+bin	1	Display time and date
dd	/sbin	bin	5	Copy and convert files	S
debug	/usr/bin	bin	2	Test POSIX programs
df	/sbin	bin	1	Display number of free and occupied disk blocks	A
diff	/usr/bin	bin	5	Compare files line by line	A
dirname	/usr/bin	scr	1	Separate path prefix from file name
du	/usr/bin	bin	1	Display occupied memory space	A
dumpfs	/sbin	bin	2	Display internal file system information	A
echo	/usr/bin	blt+bin	1	Output call arguments
ed	/sbin	bin	5	Line editor in interactive mode
edt	-	blt	1	Call BS2000 file editor EDT	S
edtu	-	blt	1	Call BS2000 file editor EDT	S
egrep	/usr/bin	bin	5	Find pattern	S
env	/usr/bin	bin	5	Change environment when executing commands
eval	-	blt	1	Process call arguments and execute them as commands
ex	/usr/bin	bin	5	Line editor
exec	-	blt	1	Overlay current shell
exit	-	blt	1	Terminate shell procedure
expand	/usr/bin	bin	5	Convert tab character to blanks	S
export	-	blt	1	Export shell variables
expr	/sbin	blt+bin	1	Evaluate expressions
expr	/usr/bin	blt+bin	1	Evaluate expressions
false	/usr/bin	alias+scr	1	Return end status not equal to 0
fc	/usr/bin	blt+scr	1	Access to history file
fg	-	blt	1	Bring jobs into foreground
fgrep	/usr/bin	bin	5	Find strings	S
file	/usr/bin	bin	5	Define file type	A
find	/usr/bin	bin	5	Search directories	A
fold	/usr/bin	bin	5	Split up long lines	S
fsck	/sbin	bin	2	Check consistency of file system and correct interactively with user	A
fsexpand	/sbin	bin	2	Expand existing file systems	A
ftyp	/usr/bin	blt+bin	1	Define types of file processing (BS2000)
funzip	/usr/local/bin	bin	4	Filter for extracting from a ZIP archive in a pipe	A
fuser	/usr/sbin	bin	2	Display file users	A
gencat	/usr/bin	bin	5	Generate binary coded message catalog
genso	/usr/bin	bin	2	Generate shared object
getconf	/usr/bin	bin	5	Call up configuration values	A
getopts	/usr/bin	blt+scr	1	Search procedure arguments for options
grep	/sbin	bin	1	Get pattern	A
hash	/usr/bin	alias+scr	1	Process shell hash table
hd	/usr/bin	bin	2	Hex dump	A
head	/usr/bin	bin	5	Output start of a file	A
iconv	/usr/bin	bin	1	Convert code	A
id	/usr/bin	blt+bin	1	Output user identification
inetd	/usr/sbin	bin	2	Daemon for internet services
info	/sbin	bin	2	Online diagnostic tool
ipcrm	/usr/bin	bin	2	Remove setup for interprocess communications
ipcs	/usr/bin	bin	2	Output state of interprocess communications setup
jobs	-	blt	1	Output job information
join	/usr/bin	bin	5	Merge two files according to matching fields	A
kill	/usr/bin	blt+scr	1	Send signals to processes
last	/usr/bin	bin	2	Display last logged in users
let	-	blt	1	Integer arithmetic
lex	/usr/bin	bin	5	Create scanner
ln	/sbin	blt+bin	1	Enter reference to file	A
locale	/usr/bin	bin	5	Call up information on the locale
localedef	/usr/bin	bin	5	Define locale
logger	/usr/bin	bin	5	Log messages
logname	/usr/bin	bin	5	Query login name
logrotate	/usr/sbin	scr	2	Change logging files of the syslog daemon	S
lp	/usr/bin	bin	5	Print out files
lpstat	/usr/bin	bin	5	Output information on print jobs
ls	/usr/bin	blt+bin	1	Output information on directories and files	A
mailx	/usr/bin	bin	5	Interactively process messages
make	/usr/bin	bin	5	Manage groups of files
man	/usr/bin	scr	5	Use online documentation
mesg	/usr/bin	bin	5	Forbid or permit receipt of messages
mkdir	/usr/bin	blt+bin	1	Create directory
mkfifo	/usr/bin	bin	5	Create FIFO
mkfs	/sbin	bin	2	Create file system
mknod	/sbin	bin	2	Create device file
more	/usr/bin	bin	5	Control screen output	A
mount	/sbin	bin	2	Mount file systems and remote resources
mountall	/sbin	scr	2	Mount two or more file systems
mv	/sbin	blt+bin	1	Move or rename files	A
newgrp	/usr/bin	blt+bin	1	Modify group membership
nice	/usr/bin	bin	5	Change priority of commands
nl	/usr/bin	bin	5	Number text lines	S
nm	/usr/bin	bin	5	Output an object file symbol table
nohup	/usr/bin	bin	5	Execute command and ignore signals
od	/usr/bin	bin	5	Output file contents in octal format	S
paste	/usr/bin	bin	5	Merge lines	S
patch	/usr/bin	bin	5	Use difference report
pathchk	/usr/bin	bin	5	Check path names
pax	/usr/bin	bin	1	Process portable archives	A
pdbl	/usr/bin	bin	2	Administer private POSIX loader
ping	/usr/bin	bin	2	Send echo requests to network hosts
pkginfo	/usr/bin	bin	2	Display information about software packages
posdbl	/usr/sbin	bin	2	Administer POSIX loader
pr	/usr/bin	bin	5	Format files and output to standard output
print	-	blt	1	Output mechanism similar to echo
printf	/usr/bin	blt+bin	5	Formatted output
ps	/sbin	bin	1	Query process data
pwd	/usr/bin	blt+bin	1	Output path name of current working directory
rcp	/usr/bin	bin	3	Copy files from or to a remote computer	A
read	/usr/bin	blt+scr	1	Read arguments of standard input and assign shell variables
readonly	-	blt	1	Protect shell variables
renice	/usr/bin	bin	5	Change priority of current processes
rm	/sbin	blt+bin	1	Delete files
rmdir	/sbin	blt+bin	1	Delete directories	A
rmpart	/sbin	bin	2	Remove partition
rsh	/usr/bin	bin	3	Execute commands on remote computer
sed	/usr/bin	bin	5	Editor in procedure mode
set	-	blt	1	Set options or parameters, output variables
sh	/sbin	bin	1	POSIX shell command interpreter and programming language	A
shift	-	blt	1	Move values of positional parameters to the left
sleep	/usr/bin	blt+bin	1	Temporarily halt processes
show_pubset_export	/sbin	scr	2	show file systems affected by EXPORT-PUBSET
sort	/usr/bin	bin	1	Sort and/or merge files	S
split	/usr/bin	bin	5	Distribute file across several files	A
start_bs2fsd	/sbin	scr	2	start copy daemons
strings	/usr/bin	bin	5	Find printable strings in object or binary files	A
stty	/usr/bin	bin	2	Output or modify attributes of a data display station
su	/sbin	bin	2	Substitute user ID
sum	/usr/bin	bin	5	Calculate checksum of a file	A
sync	/sbin	bin	2	Write back system cache
tabs	/usr/bin	bin	5	Set tabulator stops
tail	/usr/bin	bin	5	Output the last part of a file	A
talk	/usr/bin	bin	5	Talk with another user
tar	/usr/bin	bin	1	Archive files	A
tee	/usr/bin	bin	5	Join pipes together and copy input
test	/usr/bin	blt-scr	1	Check conditions
time	/usr/bin	bin	1	Measure command runtime
times	-	blt	1	Output total runtime of processes started up to now
touch	/usr/bin	blt+bin	1	Update modification and access times	A
tput	/usr/bin	bin	5	Initialize terminal or query terminfo database
tr	/usr/bin	bin	1	Replace or delete character	A
trap	-	blt	1	Modify signal handling
true	/usr/bin	alias+scr	1	Return end status 0
tsort	/usr/bin	bin	5	Sort topologically
tty	/usr/bin	bin	5	Output path name of current terminal
type	/usr/bin	alias+scr	1	Query command type
typeset	-	blt	1	Set attributes for shell variable
ulimit	/usr/bin	blt+scr	1	Limit file size for writing or query current limit	A
umask	/usr/bin	blt-scr	1	Output or modify default allocation of access rights
umount	/sbin	bin	2	Unmount file systems and remote resources
umountall	/sbin	scr	2	Unmount two or more file systems
unalias	/usr/bin	blt-scr	1	Delete variables from alias tables
uname	/sbin	bin	1	Output basic data on the current operating system
uncompress	/usr/bin	bin	5	Uncompress compressed files	A
unexpand	/usr/bin	bin	5	Convert blanks to tab characters	S
uniq	/usr/bin	bin	1	Search for repeated lines
unzip	/usr/local/bin	bin	4	List, test and extract compressed files in a ZIP archive	A
unzipsfx	/usr/local/bin	bin	4	Self-extracting stub for prepending to ZIP archives	A
uudecode	/usr/bin	bin	5	Decode file after mailx transfer
uuencode	/usr/bin	bin	5	Encode file for mailx transfer
usp	/usr/bin	bin	2	Dynamisc setting of POSIX control parameters
vi	/usr/bin	bin	5	Screen editor
wait	/usr/bin	blt+scr	1	Wait for termination of background processes
wc	/usr/bin	bin	5	Count words, characters and lines	A
whence	-	blt	1	Command localization
who	/sbin	bin	5	Show active user IDs
write	/usr/bin	bin	5	Send message to a user
xargs	/usr/bin	bin	5	Create argument list(s) and execute command
yacc	/usr/bin	bin	5	Create parser
zcat	/usr/bin	bin	5	Output compressed files	A
zip	/usr/local/bin	bin	4	Package and compress (archive) files	A
zipcloak	/usr/local/bin	bin	4	Encrypt entries in a zipfile	A
zipgrep	/usr/local/bin	bin	4	Search files in a ZIP archive for lines matching a pattern	A
zipinfo	/usr/local/bin	bin	4	List detailed information about a ZIP archive	A
zipnote	/usr/local/bin	bin	4	Write the comments in zipfile to stdout, edit comments and rename files in zipfile	A
zipsplit	/usr/local/bin	bin	4	Split a zipfile into smaller zipfiles	A