Linux Command Line Utilities

cp

Copies one or more files

diff

Displays the differences between two files

file

Displays information about the contents of a file

grep

Searches file(s) for a string

head

Displays the lines at the beginning of a file

lpq

Displays a list of jobs in the print queue

lpr

Places file(s) in the print queue

lprm

Removes a job from the print queue

mv

Renames a file or moves file(s) to another directory

sort

Puts a file in order by lines

tail

Displays the lines at the end of a file

uniq

Displays the contents of a file, skipping successive duplicate lines

bunzip2

Returns a file compressed with bzip2 to its original size and format

bzcat

Displays a file compressed with bzip2

bzip2

Compresses a file

compress

Compresses a file (not as well as gzip)

gunzip

Returns a file compressed with gzip or compress to its original size and format

gzip

Compresses a file

zcat

Displays a file compressed with gzip

tar

Creates or extracts files from an archive file

apropos

Searches the man page one-line descriptions for a keyword

slocate

Searches for files on the local system

whereis

Displays the full pathnames of a utility, source code, or man page

which

Displays the full pathname of a command you can run

finger

Displays detailed information about users, including their full names

w

Displays detailed information about users who are logged in

who

Displays information about users who are logged in

mesg

Permits or denies messages sent by write

write

Sends a message to another user who is logged in

date

Displays the current date and time

echo

Copies its arguments  to the screen