Linux VI Editor commands

NOTE: Every command in vi Editor should be start with “:” except insert cmd

set “vi” editor as default editor

 export EDITOR=vi

Open existing file in “vi” editor

Cmd: vi {file_name}

Close a file with out changes

:q or :q!

Close & save with all changes

:wq!

Write the content in editor

Cmd : i (when click on ‘i’ button, it shows --- INSERT--- in bottom of screen)

show line numbers in a file  

:set num 

Jump to specific line in a file

 :{line_no}

Delete entire content in file

  :%d

Delete specific lines in a file

  :start_line_no,end_line_no{d}

E.g: :2,45d

Directly go to specific line while opening file

 sudo +line number {file_name}

e.g: sudo +300 demo.txt

Search a word or string in a file

/{search_term}

E.g: :/page

Delete a current line

:dd

Undo last command

:u