VIM indentation

On Fedora 25
go to /etc
edit file vimrc
add

set tabstop=4
set shiftwidth=4

save and close

Laptop Can See Wireless Networks But One

    If your laptop can't connect some Wi-Fi networks you should try to decrease the Channel value on router.
Some wireless adapters are not able to connect channel 12-13-14 so you should try 11 or lower.