Difference between revisions of "Coreutils"

Revision as of 02:25, 18 August 2006

Coreutils is a package of GNU software containing many of the basic tools such as cat, ls, and rm needed for Unix-like operating systems.

GNU coreutils capabilities

The GNU core utilities support long options as parameters to the commands, as well as the relaxation of the convention of specifying options before the regular arguments, unless the POSIXLY_CORRECT environment variable is set. Additionally, as the GNU philosophy shifts information away from manual pages (and uses tools such as info), usage information is more extensive.

Programs included in coreutils

• basename
• cat
• chgrp
• chmod
• chown
• chroot
• cksum
• comm
• cp
• csplit — split a file into sections determined by context lines
• cut
• date
• dd
• df
• dir — functions exactly the same as ls
• dircolors — colour setup for ls
• dirname — strip non-directory suffix from file name
• du
• echo — display a line of text
• env
• expand — convert tabs to spaces
• expr — evaluate expressions
• factor — factor numbers
• false — do nothing, unsuccessfully
• fmt — simple optimal text formatter
• fold — wrap each input line to fit in specified width
• groups — print the groups a user is in
• head
• hostid — print the numeric identifier for the current host
• id
• install — copy files and set attributes
• join
• link — call the link function to create a link to a file
• ln
• logname — print user's login name
• ls
• md5sum — compute and check MD5 message digest
• mkdir
• mkfifo — make FIFOs (named pipes)
• mknod — make block or character special files
• mv
• nice
• nl
• nohup
• od
• paste
• pathchk — check whether file names are valid or portable
• pinky — lightweight finger
• pr — convert text files for printing
• printenv — print all or part of environment
• printf — format and print data
• ptx
• pwd
• readlink — display value of a symbolic link
• rm
• rmdir
• seq — print a sequence of numbers
• sha1sum — compute and check SHA1 message digest
• shred — overwrite a file to hide its contents, and optionally delete it
• sleep — delay for a specified amount of time
• sort
• split
• stat
• stty — change and print terminal line settings
• sum — checksum and count the blocks in a file
• sync — flush file system buffers
• tac — concatenate and print files in reverse
• tail
• tee
• test
• touch
• tr
• true — do nothing, successfully
• tsort — perform topological sort
• tty
• uname
• unexpand — convert spaces to tabs
• uniq
• unlink — call the unlink function to remove the specified file
• users — print the user names of users currently logged in to the current host
• vdir — list directory contents
• wc
• who
• whoami — print effective userid
• yes

See also

• List of Linux Programmes
• BusyBox coreutils like package for embedded Linux.

External link

• Homepage