Linux CheatSheet :)

Essential Commands

• ls: List the contents of the current directory

• cd: Change directory

• pwd: Print the working directory

• mkdir: Create a new directory

• rmdir: Remove a directory

• cp: Copy a file

• mv: Move a file

• rm: Remove a file

• nano: Open a text editor

• cat: Concatenate files

• grep: Search for patterns in files

• sudo: Run a command as another user

File and Directory Permissions

• chmod: Change the permissions of a file or directory

• chown: Change the owner of a file or directory

• chgrp: Change the group of a file or directory

Processes

• ps: List all running processes

• top: Display a real-time list of running processes

• kill: Terminate a running process

Networking

• ping: Send a ping request to a host

• ifconfig: Display information about network interfaces

• traceroute: Trace the route to a host

Other Useful Commands

• man: Display the manual page for a command

• history: Display a list of recently executed commands

• clear: Clear the terminal screen

System Administration

• apt-get: Install, remove, and update software packages

• yum: Install, remove, and update software packages (Red Hat and CentOS)

• dnf: Install, remove, and update software packages (Fedora)

• systemctl: Control system services

Troubleshooting

• dmesg: Display kernel messages

• strace: Trace the system calls made by a process

• ltrace: Trace the library calls made by a process

Tips and Tricks

• Use the Ctrl + R shortcut to search through your command history.

• You can use the sudo command to run commands as another user. This is useful for performing administrative tasks.

• Use the man command to read the manual page for a command. This is a great way to learn more about how to use a command and its options.

• You can use the | (pipe) character to chain commands together. This allows you to output the results of one command to the input of another command.

• You can use the > (redirect) character to redirect the output of a command to a file.