SHELL

edit file terminal

vim filename.txt

//press i to enter insert mode
//press esc to exit insert mode
type :wq then enter to leave vim

how to edit a file in terminal windows

C:> notepad somefile.txt

Linux, edit file in terminal

1. nano filepath.extension

2. vim filepath.extesion
	2.a press i //for edit mode
    2.b Enter Esc
    2.c :wq // write this at the end of file to save the edited part
    2.d :q! // without save and quite