Here is a Complete List of Linux Commands for Beginners and developers (Advanced). All commands in Linux are given here in alphabetical order (A to Z).
addresses- formats for internet mail addresses
agetty- an alternative Linux getty
alias- create an alias for Linux commands
aptitude- search and install software packages
awk- find and replace text in a file (files).
banner- To print characters as a poster
bash- GNU Bourne-Again Shell
basename- used to display file names with directory or suffix
bzip2- To compress/ decompress given files
cal- show calendar
case- Execute a command conditionally by matching a pattern
cc- GNU C and C++ compiler
change- used to change user password information
chpasswd- to update password in a batch
clear- to clear the terminal window
cmp- used to compare (byte by byte) two files
compress- to compress one or more files and replacing the original ones
continue- used to Resume the next iteration of a loop
cp- copy contents of one file to another file
date- used to show system date and time
declare- To declare variables and assign attributes
diff- to compare files line by line
dir- this command lists the contents of a directory
echo- used to print a text of the line provided
eject- to eject removable media (CD ROM, DVD etc)
exit- To exit from the terminal
factor- to show prime factors of integer numbers
file- used to determine the file type for a file
find- this command is used to search in a directory hierarchy
format- To format disks
free- to display free and used system memory
function- To define function macros
grep- this command searches for a specified pattern in a file (s) and displays in output lines containing that pattern.
groups- this command shows the groups to which a user belongs
gunzip- a utility to compress or expand files
halt- used to halt the machine
help- to show help for a built-in command
history- this command displays the command history
host- it is a utility to perform DNS lookups
id- shows the user and group information show the current user or specified user name
if- used to execute a command conditionally
info- read the documentation in info format
ip- used to display or manage routing, devices, policy routing and tunnels.
jobs- this command displays the list of acting jobs and their status
join- this command is used for each pair of input lines, join them with the help of command field and then display on standard output.
kill- To kill (terminate) a process using its PID by sending a signal to it.
killall- this command is used to kill a process by its name
last- to show a list of last logged in users
ln- to create a soft link between files using the -s flag
locate- find files by their names
login- used to create a new session on the system
mail- utility to compose, send receive, forward and reply to emails
make- utility to maintain and recompile groups of programs
man- this command displays the manual pages for Linux commands.
merge- Three-way file merge, includes all changes from file 2 and file 3 to file 1
named- internet domain name server
netstat- to display network information
newgrp- this command is used for login to a new group
objcopy- to copy and translate object files
od- the command is used to dump files in octal and other formats
open- to open a file using its default application
passwd- used to change user password
perl- perl 5 language interpreter
ping- Send ICMP ECHO_REQUEST to Network hosts
quota- this command is used to display disk usage and space limits for a user or group
read- used to read from a file descriptor
reboot- with the help of this command you can restart the machine
reject- To accept or reject print jobs
rename- For renaming files
reset- used to reinitialise the terminal
return- To exit a shell function
shutdown- this command schedules a time for the system to be powered down.
sleep- to delay or pause for a specified amount of time
split- to split a large file into small parts.
shopt- Shell options
skill- this command is used to send signal to processes
sleep- with the help of this command you can suspend execution for a specified amount of time.
tar- it is used to store and extract multiple files from single archive.
telnet- you can interact with another host
test- it is used to check type of files and compare their values
tset- initialise the terminal
uname- it displays the current operating system name. It can also print system information
uniq- this command displays or omits repeated lines from input
users- it displays the user names that are currently logged in to the current host.
vi- a text editor utility
vim- vi improved
w- you can check who is logged on and what he or she is doing.
wget- A non interactive file download utility
xargs- used by admins to read, build and execute arguments from Standard Input.
yes- to display a string repeatedly until terminated or killed using ctrl+c
zip- this command is used to package and compress files
List of Linux Commands
accept- accept or reject jobs to a destinationaddresses- formats for internet mail addresses
agetty- an alternative Linux getty
alias- create an alias for Linux commands
aptitude- search and install software packages
awk- find and replace text in a file (files).
banner- To print characters as a poster
bash- GNU Bourne-Again Shell
basename- used to display file names with directory or suffix
bzip2- To compress/ decompress given files
cal- show calendar
case- Execute a command conditionally by matching a pattern
cc- GNU C and C++ compiler
change- used to change user password information
chpasswd- to update password in a batch
clear- to clear the terminal window
cmp- used to compare (byte by byte) two files
compress- to compress one or more files and replacing the original ones
continue- used to Resume the next iteration of a loop
cp- copy contents of one file to another file
date- used to show system date and time
declare- To declare variables and assign attributes
diff- to compare files line by line
dir- this command lists the contents of a directory
echo- used to print a text of the line provided
eject- to eject removable media (CD ROM, DVD etc)
exit- To exit from the terminal
factor- to show prime factors of integer numbers
file- used to determine the file type for a file
find- this command is used to search in a directory hierarchy
format- To format disks
free- to display free and used system memory
function- To define function macros
grep- this command searches for a specified pattern in a file (s) and displays in output lines containing that pattern.
groups- this command shows the groups to which a user belongs
gunzip- a utility to compress or expand files
halt- used to halt the machine
help- to show help for a built-in command
history- this command displays the command history
host- it is a utility to perform DNS lookups
id- shows the user and group information show the current user or specified user name
if- used to execute a command conditionally
info- read the documentation in info format
ip- used to display or manage routing, devices, policy routing and tunnels.
jobs- this command displays the list of acting jobs and their status
join- this command is used for each pair of input lines, join them with the help of command field and then display on standard output.
kill- To kill (terminate) a process using its PID by sending a signal to it.
killall- this command is used to kill a process by its name
last- to show a list of last logged in users
ln- to create a soft link between files using the -s flag
locate- find files by their names
login- used to create a new session on the system
mail- utility to compose, send receive, forward and reply to emails
make- utility to maintain and recompile groups of programs
man- this command displays the manual pages for Linux commands.
merge- Three-way file merge, includes all changes from file 2 and file 3 to file 1
named- internet domain name server
netstat- to display network information
newgrp- this command is used for login to a new group
objcopy- to copy and translate object files
od- the command is used to dump files in octal and other formats
open- to open a file using its default application
passwd- used to change user password
perl- perl 5 language interpreter
ping- Send ICMP ECHO_REQUEST to Network hosts
quota- this command is used to display disk usage and space limits for a user or group
read- used to read from a file descriptor
reboot- with the help of this command you can restart the machine
reject- To accept or reject print jobs
rename- For renaming files
reset- used to reinitialise the terminal
return- To exit a shell function
shutdown- this command schedules a time for the system to be powered down.
sleep- to delay or pause for a specified amount of time
split- to split a large file into small parts.
shopt- Shell options
skill- this command is used to send signal to processes
sleep- with the help of this command you can suspend execution for a specified amount of time.
tar- it is used to store and extract multiple files from single archive.
telnet- you can interact with another host
test- it is used to check type of files and compare their values
tset- initialise the terminal
uname- it displays the current operating system name. It can also print system information
uniq- this command displays or omits repeated lines from input
users- it displays the user names that are currently logged in to the current host.
vi- a text editor utility
vim- vi improved
w- you can check who is logged on and what he or she is doing.
wget- A non interactive file download utility
xargs- used by admins to read, build and execute arguments from Standard Input.
yes- to display a string repeatedly until terminated or killed using ctrl+c
zip- this command is used to package and compress files
