Modify file in Whonix

[johnrabbit]

Hello
I tried to modify file with GEDIT and VI but in terminal I can’t delete or add lines.
Any tip?

Regards

[Patrick]

• https://www.whonix.org/wiki/Template:Open_File

• https://www.whonix.org/wiki/Template:Open_with_root_rights

• https://www.whonix.org/wiki/Support#Free_Support_Principle