Linux Command Cheat Sheet
Basic Linux commands
| Command | Description | |
ls | Lists all files and directories in the present working directory | |
ls -R | Lists files in sub-directories as well | |
ls -a | Lists hidden files as well | |
ls -al | Lists files and directories with detailed information like permissions,size, owner, etc. | |
cd or cd ~ | Navigate to HOME directory | |
cd .. | Move one level up | |
cd | To change to a particular directory | |
cd / | Move to the root directory | |
cat > filename | Creates a new file | |
cat filename | Displays the file content | |
cat file1 file2 > file3 | Joins two files (file1, file2) and stores the output in a new file (file3) | |
mv file "new file path" | Moves the files to the new location | |
mv filename new_file_name | Renames the file to a new filename | |
sudo | Allows regular users to run programs with the security privileges of the superuser or root | |
rm filename | Deletes a file | |
man | Gives help information on a command | |
history | Gives a list of all past commands typed in the current terminal session | |
clear | Clears the terminal | |
mkdir directoryname | Creates a new directory in the present working directory or a at the specified path | |
rmdir | Deletes a directory | |
mv | Renames a directory | |
apt-get | Command used to install and update packages |
File Permission commands
| Command | Description | |
ls -l | to show file type and access permission | |
r | read permission | |
w | write permission | |
x | execute permission | |
-= | no permission | |
Chown user | For changing the ownership of a file/directory | |
Chown user:group filename | change the user as well as group for a file or directory |
User management commands of linux
| Command | Description | |
sudo adduser username | To add a new user | |
sudo passwd -l 'username' | To change the password of a user | |
sudo userdel -r 'username' | To remove a newly created user | |
sudo usermod -a -G GROUPNAME USERNAME | To add a user to a group |
Networking command
| Command | Description | |
SSH username@ip-address or hostname | login into a remote Linux machine using SSH | |
Ping hostname="" or ="" | To ping and Analyzing network and host connections | |
quit | Logout |
Process command
| Command | Description | |
top | Details on all Active Processes | |
ps | Give the status of processes running for a user | |
ps PID | Gives the status of a particular process | |
pidof | Gives the Process ID (PID) of a process | |
kill PID | Kills a process | |
nice | Starts a process with a given priority | |
df | Gives free hard disk space on your system | |
free | Gives free RAM on your system |
About the author
Hey there! I'm currently working as an Associate DevOps Engineer, and I'm diving into popular DevOps tools like Azure Devops,Linux, Docker, Kubernetes,Terraform and Ansible. I'm also on the learning track with AWS certifications to amp up my cloud game. If you're into tech collaborations and exploring new horizons, let's connect!
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