Bash Index : V - The 'V' Bash commands : description, flags and examples

• edits the sudoers file (defaults to /etc/sudoers) in a safe fashion, like vipw does
• locks it against multiple simultaneous edits
• performs basic validity checks
• and checks for syntax errors before installing the edited file

• visudo parses the sudoers file and will not save the changes if there is a syntax error
• upon finding an error
  • visudo will print a message stating the line number(s) where the error occurred
  • and the user will receive the What now? prompt
• at this point the user may enter :
  • e to re-edit the sudoers file (the cursor will be placed on the line where the error occurred if the editor supports this feature)
  • x to exit without saving the changes
  • Q to quit and save changes
    This option should be used with extreme caution because if visudo believes there to be a syntax error, so will sudo.

edit /etc/password :

edit /etc/shadow :

Output fields :

Am I swapping ?