To see current Directory - pwd
Example output, /User/Joel
List Directory - ls
For more advance view ls -ls for viewing file permission.
Change Directory - cd
Example, cd Document
cd .. to go back up one directory (from /Joel/Document to /Joel)
Copy — cp
Example, cp Joel.txt Document (Copy to Document)
Example, cp Joel.txt Joel1.txt (Make 2 copy of same file but different name)
Move (Cut) — mv
Example, mv Joel.txt Document (Move to Document)
Example, mv Joel.txt Joel1.txt (To rename file)
Remove (delete) - rm
rm to remove normal file
rm -rf force remove, to remove directory(folder) containing files/folders
Remove Directory (Folder)
Only works if folder is empty if not use rm -rf
Text Editor, nano or vi
Example nano Joel.txt
If file already exists it will edit it, if it doesn’t exists it will create one when you save it.
Get root privilege sudo
Example sudo nano Joel.txt, to edit file that require root access
Example sudo rm Joel.txt
Change file permission chmod 666
Example, chmod 666 Joel.txt
chmod 666 means that all users can read and write but do not execute
chmod 777 allows all actions for all users
chmod 744 allows only owner to do all actions, group and other are allowed only to read
echo for system to return output
Example, echo Joel, output, Joel