Linux cheat sheet for day-to-day actions...!!!

Linux is a powerful operating system that become much more manageable when you know your way around the terminal. This cheat sheet will make your day-to-day easier.

Files & Dir Navigation:-

1. 
   pwd - prints current working directory


2. 
   ls - list all files and directories


3. 
   cd - change directory


4. 
   mkdir - create directory


5. 
   rmdir - remove directory

File Operations:-

1. 
   touch filename - create empty file


2. 
   cp file1 file2 - copy file.


3. 
   mv old new - move or rename.


4. 
   rm file - delete file


5. 
   cat file - view the content of file


6. 
   less file - view file one page at a time


7. 
   head -n 10 file - show first 10 lines. modify 10 in command to get required number of lines.


8. 
   tail -n 10 file - show last 10 lines.

Search & Filter:-

1. 
   find . -name ".txt" - find files by name


2. 
   grep "Word" filename - search for the key word in a file


3. 
   grep -r "word" dir/ - search recursively for a word in directory

System Info and Monitoring:-

1. 
   uname -a - kernel and system info


2. 
   df -h - disk space usage


3. *du -sh * * - directory size summary


4. 
   top - live process


5. 
   free -h - memory usage


6. 
   uptime - system running time

Networking commands:-

1. 
   ip -a - show ip address


2. 
   ping 0.0.0.0 - pings the ip address


3. 
   curl https://sample.com - make http requests


4. 
   wget URL - downloads files


5. 
   netstat -tunlp - show open ports and services


6. 
   ss -tunl - display listening ports

This linux cheat sheet is a starting point, but real understanding comes from practice. bookmark this page or print out and stick at your desk. stay tuned for more information.