Here you can find the most common Linux commands that I personally use everyday to administer few linux servers.
All these Linux commands are typed in the command prompt (also known as terminal). Some commands may need root access
to be executed, you can use
sudo command to elevate the privileges of the command. If you found these Linux commands
useful, share this page with your friends.
//Append text to a file echo "content" >> <file> //Overwrite a file's content echo "content" > <file> //Redirect (append) standard output to a file ls -la >> <file> //View resources being used on your system top //View who is logged on who //View used and available disk space df -h //Clear a command line screen clear //Start a service service <name> start //Stop a service service <name> stop //Restart a service service <name> restart //View the content of a file cat <file> //View the last 10 lines of a file's content tail -10 <file> //View the first 10 lines of a file's content head -10 <file> //Force termination of a process kill -9 pid //Delete an empty directory rmdir <dir> //Create an empty file touch <file> //Change the password of an user passwd <username> //View a snapshot of the currently running processes ps x //Compress a file in .tar.gz tar czf compressed.tar.gz <file> //Compress a file in .tar tar cf compressed.tar <file> //Decompress a .gz file gunzip <file> //Decompress a .tar file tar xf <file> //Change directory cd <dir> //Update the package lists from the repositories apt-get update //Install a new package apt-get install <packagename> //Completely remove an installed package apt-get --purge autoremove <packagename> //Update an already installed package apt-get update && apt-get install <packagename> //Get the current directory pwd //View active connections netstat -an //List directory content ls -la <dir> //List block devices by their assigned name lsblk //Get md5 checksum of a file md5sum <file> //View information about the machine name uname -a //View history of executed commands in terminal history //Clear recent hostory of executed commands history -c //Create a new directory mkdir <dir> //Change file permissions chmod <permissions> <file> //Change the owner and group of a folder chown www-data:www-data /var/directory //Change the owner and group of a folder recursively chown -R www-data:www-data /var/directory //Remove a file rm -f <file> //Remove a folder (and files) recursively rm -rf <dir> //Get current date and time date //Copy a file from one location to another cp <file> <location> //Move a file from one location to another mv <file> <location> //Rename a file mv <file> <newfile>