15.2. Command Behavior

Table of Contents
ar -- create and maintain library archives (DEPRECATED)
at -- examine or delete jobs for later execution
awk -- pattern scanning and processing language
batch -- schedule commands to be executed in a batch queue
bc -- an arbitrary precision calculator language
chfn -- change user name and information
chsh -- change login shell
col -- filter reverse line feeds from input
cpio -- copy file archives in and out
crontab -- maintain crontab files for individual users
df -- report file system disk space usage
dmesg -- print or control the system message buffer
du -- estimate file space usage
echo -- write arguments to standard output
egrep -- search a file with an Extended Regular Expression pattern
fgrep -- search a file with a fixed pattern
file -- determine file type
fuser -- identify processes using files or sockets
gettext -- retrieve text string from message catalog
grep -- print lines matching a pattern
groupadd -- create a new group
groupdel -- delete a group
groupmod -- modify a group
groups -- display a group
gunzip -- uncompress files
gzip -- compress or expand files
hostname -- show or set the system's host name
install -- copy files and set attributes
install_initd -- activate an init script
ipcrm -- remove IPC Resources
ipcs -- provide information on ipc facilities
killall -- kill processes by name
lpr -- off line print
ls -- list directory contents
lsb_release -- print distribution specific information
m4 -- macro processor
md5sum -- generate or check MD5 message digests
mknod -- make special files
mktemp -- make temporary file name (unique)
more -- display files on a page-by-page basis
mount -- mount a file system
msgfmt -- create a message object from a message file
newgrp -- change group ID
od -- dump files in octal and other formats
passwd -- change user password
patch -- apply a diff file to an original
pidof -- find the process ID of a running program
remove_initd -- clean up init script system modifications introduced by install_initd
renice -- alter priority of running processes
sed -- stream editor
sendmail -- an electronic mail transport agent
seq -- generate a sequence of numbers
sh -- shell, the standard command language interpreter
shutdown -- shut the system down
su -- change user ID
sync -- flush file system buffers
tar -- file archiver
umount -- unmount file systems
useradd -- create a new user or update default new user information
userdel -- delete a user account and related files
usermod -- modify a user account
xargs -- build and execute command lines from standard input
zcat -- uncompress files to standard output

This section contains descriptions for commands and utilities whose specified behavior in the LSB contradicts or extends the standards referenced. It also contains commands and utilities only required by the LSB and not specified by other standards.