Command summary according to functions

The following summary indicates the function-specific subdivision of POSIX commands. Since some commands can be allocated to more than one function, it is possible that names may be duplicated. For a detailed description of the commands in alphabetical order please refer to the chapter “Commands”.

The commands are allocated to the following main functions:

• Command interpreter

• Querying or modifying the user environment

• Managing and processing files and texts

  • outputting

  • processing

  • saving and archiving

  • compressing and restoring to uncompressed state

  • querying and modifying file properties

• modifying and managing the file system

  • modifying the file system

  • managing the file system

• Printing and print management

• Data display terminal

• Editors

• Auxiliary commands for shell procedures

• Reading, converting and outputting characters

• Querying and modifying user properties

• User administration

• Interuser communication

• Calendar functions and dates

• Arithmetic functions

• Compiler commands

• Program testing

• Job management

• Process information

• Process control

• Inter-process communication

• Terminal

• Checking storage availability

• Information on system data

• Online documentation

• Flushing the system buffer

• Calling BS2000 procedures

• Administer POSIX program cache

• Network commands

• NLS commands (Native Language System)

Command interpreter
sh	POSIX shell
Query or modify user environment
cd	change working directory
env	set environment for command execution
fuser	display file users
id	return user identity
last	display last logged in users
logname	display login name
ls	list directory contents
pwd	return working directory name
su	substitute user ID
sudo	Execute a command as another user
tty	output path name of current terminal
who	show who is on the system
Managing and processing files and texts
output
cat	concatenate and print files
hd	hex dump
head	copy the first part of files
more	page through a text file
od	dump files in various formats
pr	prepare files for printing
strings	find printable strings in object or binary files
tail	copy the last part of a file
zcat	display compressed files in expanded form
process
awk	pattern scanning and processing language
cksum	write file checksums and sizes
cmp	compare two files
comm	select or reject lines common to two sorted files
csplit	context split
cut	cut out selected fields of each line of a file
diff	differential file comparator
edt, edtu	process file with EDT (BS2000)
egrep	search a file with an ERE pattern
fgrep	search a file for a fixed-string pattern
find	find files
fold	filter for folding lines
grep	search a file for a pattern
join	relational database operator
nl	number lines
paste	merge corresponding or subsequent lines of files
patch	use diff list
sort	sort, merge or sequence check text files
split	split a file into pieces
sum	print checksum and block count of a file
tr	transliterate characters
tsort	topological sort
uniq	report or filter out repeated lines in a file
wc	word, line and byte or character count
save and archive
ar	manage libraries
cpio	copy in and out
dd	convert and copy files
iconv	codeset conversion
nm	print symbol table of object file
pax	portable archive processing
tar	file archiver
unzip	list, test and extract compressed files in a ZIP archive
zip	Package and compress (archive) files
compressing and restoring to uncompressed state
compress	compress files
uncompress	expand compressed files
zcat	display compressed files in expanded form
query and modify file properties
chgrp	change file group ownership
chmod	change file modes
chown	change file ownership
file	check type of file
ls	list directory contents
touch	change file access and modification times
umask	get or set the file mode creation mask
Modifying and managing the file system
modify file system
bs2cp	copy BS2000 files
bs2file	set BS2000 file attributes
cp	copy files
csplit	context split
find	find files
fsexpand	Expand existing file systems
ftyp	determine processing mode for BS2000 files
ln	link files
make	maintain groups of files
mkdir	make directory
mv	move files
rm	remove directory entries
rmdir	remove directories
split	split a file into pieces
Manage file system
dumpfs	dump file system
fsck	file system check
mkfifo	make FIFO special file
mknod	make an inode
mount	mount a file system
mountall	mount file systems
pathchk	check pathnames
show_pubset_export	show file systems affected by EXPORT-PUBSET
start_bs2fsd	start copy daemons
umount	unmount a file system
umountall	unmount file systems
Printing and print management
asa	interpret carriage-control characters
bs2lp	send files to a printer
cancel	cancel requests to an LP print service
lp	send requests to an LP print service
lpstat	print information about the status of the LP print
pr	prepare files for printing
Editors
ed	interactive line editor
edt, edtu	process file with EDT (BS2000)
ex	command and display editor
sed	stream editor
vi	display editor (visual)
Auxiliary commands for shell procedures
basename	return non-directory portion of path name
dirname	return directory portion of path name
expr	evaluate arguments as an expression
false	return false value
getopts	parse utility options
pathchk	check pathnames
sleep	suspend execution for an interval
test	evaluate expression
true	return true value
xargs	construct argument list(s) and execute command
[ ... ]	evaluate expression (like test)
Reading, converting and outputting characters
echo	write arguments to standard output
hd	hex dump
od	dump files in various formats
print	output mechanism similar to echo
printf	formatted output
tee	join pipes and make copies of input
Querying and modifying user properties
id	return user identity
logname	display login name
mesg	permit or deny messages
newgrp	change to a new group
User administration
fuser	display file users
last	display last logged in users
who	show who is on the system
Interuser communication
mailx	interactive message processing system (mail extended)
mesg	permit or deny messages
talk	talk to another user
write	write to another user
Calendar functions and dates
at	execute commands at a later time
batch	execute commands at a later time
cal	print calendar
crontab	regularly execute commands at specific times
date	write the date and time
Arithmetic functions
bc	arbitrary precision arithmetic language
expr	evaluate arguments as an expression
let	integer calculations
Compiler commands
lex	generate programs for lexical tasks
yacc	yet another compiler-compiler
Program testing
debug	test POSIX programs
Job management
bg	run jobs in the background
fg	run jobs in the foreground
jobs	display status of jobs in the current session
Process information
logger	log messages
ps	report process status
time	time a simple command
times	write process times
Process control
at / batch	execute commands at a later time
kill	terminate or signal processes
nice	run a command at low priority (be nice)
nohup	run a command immune to hangups and quits
renice	alter the scheduling priority of running processes
sleep	suspend execution for an interval
wait	await process completion
Inter-process communication
ipcrm	remove inter-process communication facilities
ipcs	inter-process communication status
Data display terminal
bs2pkey	set P keys
expand	convert tabs to spaces
stty	display or modify attributes of a data display station
tabs	set tabs on a terminal
tput	initialize a terminal or query the terminfo database
tty	output path name of current terminal
unexpand	convert spaces to tabs
Checking storage availability
df	report free disk space
du	estimate file space usage
Information on system data
info	Online diagnostic tool
pkginfo	Display informations about software packages
ps	report process status
uname	output basic data on the current operating system
who	show who is on the system
Online documentation
man	display on-line manual pages
Clearing the system buffer
sync	flush system buffer
Calling BS2000 procedures
bs2do	Calling BS2000 procedures from POSIX
Administer POSIX program cache
pdbl	Administer private POSIX loader
posdbl	Administer POSIX loader
Networking commands
ping	send echo requests to network hosts
rcp	remote file copy
rsh	remote shell
uudecode	decode file after mailing with mailx
uuencode	encode file for mailing with mailx
uuname	list names of UUCP systems
NLS commands (Native Language System)
gencat	generate a binary encoded message catalog
locale	call up information about the locale
localedef	define locale
Subsystem administration
usp	Dynamic setting of POSIX control parameters