GNU CoreUtils: a collection of basic file, shell and text manipulation utilities
Description:
The GNU Core Utilities are the basic file, shell and text manipulation utilities of the GNU
operating system. These are the core utilities which are expected to exist on every UNIX /
Linux / GNU operating system.
File utilities:
chgrp
chown
chmod
cp
dd
df
dir
dircolors
du
install
ln
ls
mkdir
mkfifo
mknod
mv
rm
rmdir
shred
sync
touch
vdir
change file group ownership (GID)
change file ownership (UID)
change file access mode permissions
copy files and directories
copy and convert a files
show disk free space on filesystems
display a brief directory listing
setup program to customize the color output of the command ‘ls’
show disk usage on filesystems
copy files and set permissions
create file links –multiple names for a file or directory (symbolic & hard links)
list directory contents
make/create directories
make/create FIFOs (named pipes)
make/create special files
move or rename files and directories
remove (delete) files and directories
remove empty directories
destroy data in files
synchronize filesystem buffers and physical disks
change file timestamps or create empty files
display a simple long directory listing
Text utilities:
cat
cksum
comm
csplit
cut
expand
fmt
fold
head
join
md5sum
nl
od
paste
ptx
concatenate and print files to the standard output (console)
compute the checksum and count the bytes in files
compare two sorted files line by line
split files into sections determined by context lines
remove sections from each line of files
convert tabs to spaces in files
simple optimal text/paragraph formatter (word wrap)
wrap each input line to fit in specified width in files
output the first lines (usually 10) of files
join lines of two files on a common field
compute and check MD5 message digest checksums of files
number or add line numbers to the lines of files
dump/display files in octal and other formats
merge lines of files
produce a permuted index of file contents
pr
shasum
sort
split
sum
tac
tail
tr
tsort
unexpand
uniq
wc
prepare text files for printing
compute and check SHA1 message digest checksums of files
sort lines of text files
split a file into pieces
compute the checksum and count the blocks (clusters) of files
concatenates and print files in reverse to the standard output
output the last lines (usually 10) of files
translate or deletes characters in files
perform topological sort on files
convert spaces to tabs in files
remove duplicate lines (make all lines unique) in sorted files
count the number of bytes(characters), words, and lines in files
Shell utilities:
[
basename
chroot
date
dirname
echo
env
expr
factor
false
groups
hostid
hostname
id
logname
nice
nohup
pathchk
pinky
printenv
printf
pwd
seq
sleep
stty
su
tee
test
true
tty
uname
users
who
whoami
yes
test file types and compare values
remove the path prefix from a given pathname
change the root directory for a process
print/set the system date and time
remove the last level or filename from a given pathname
print a line of text to the standard output (console)
display/modify the environmental variables
evaluate expressions (patterns)
print the prime factors of a number
return an unsuccessful exit status (do nothing unsuccessfully)
print the groups (GIDs) that the user is a member of
print the numeric identifier for the current host
print or set the host machine name
print the real/effective UID and GID for a user
print the current user login name
modify the scheduling priority for a process
allow a command/process to continue running after logging out
check for filename portability
a lightweight (ietf) finger utility
print/display the environment variables
format and print data
print the current working directory
print numeric sequences
suspend execution for a specified time
print/change your terminal settings
switch to the User-ID of another user or the SuperUser (root)
send redirected output to multiple files or pipes
evaluate an expression
return a successful exit status (do nothing successfully)
print the terminal name
print system information
print the current user names
print a list of all users who are currently logged in
print your effective User-ID (UID)
print a string repeatedly
GNU Core Utilities
Page 2 of 2