# Comment out block of lines Change the 10 & 100 to the appropriate line numbers, in this example lines 10-100 will have a # placed at the beginning of each line ``` <ESC> :10,100s/^/#/ ``` **Remove comments** ``` <ESC> :10,100s/^#// ``` # Write with Sudo This is for writing out with sudo if you opened as an unprivileged user. ```` :w !sudo tee % ````