vim is a modal editor: in different modes of vim, the same keystroke is interpreted differently.
You can open vim from the command line by typing 'vim'. If you want to learn more, then type ':vimtutor' for a relatively quick (~30 min) introduction. For help type ':help' or press 'F1'.
Small tips to survive in Vim
To insert text (and be in the insert mode): press 'i' then edit your text. To come back to the command mode press "ESC".
To save text (in command mode): press ':w'
To quit vim (in command mode): press ':q'
To quit vim without saving (in command mode): press ':q!'
To delete the line where the cursor is (in command mode): press 'dd'
Vim supports syntax highlighting. To activate it open up
and uncomment the line
" Vim5 and later versions support syntax highlighting. Uncommenting the next
" line enables syntax highlighting by default.
If you are editing a file containing PHP script (for example) but the file doesn't have the extension .php, you can force the desired syntax coloring with:set syntax=php
similarly:set syntax=perl :set syntax=html
Alternatively if the extension causes an undesired coloring, switch off coloring with:set syntax=off
look in the directory */vim/vim61/ftplugin / for supported languages (ftplugin == FileType Plugin).
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