Comment/Uncomment multiple lines in Vim

SOURCE: https://hurley.wordpress.com/2007/06/13/vim-tip-comment-out-multiple-lines/ Commenting out a bunch of lines without a vim plugin: Select your lines with VISUAL BLOCK (CTRL-V), then press I to insert before all highlighted lines. Next type your comment character, # (for python, shell, etc). Last press ESC. I forget not frequently used, but helpful VIM commands from time to time. Why not blog it? You can alternatively select your lines with VISUAL LINE (SHIFT-V), then type : s/^/# This tells the selected lines that you wish to substitute the start of the line with the # char.