Colon (“:”) commands vi filex

:w	Write to file; defaults to the file name you gave it on invocation. If you didn't give it a file name on the command line, it will gripe.
:w  filename	Save the file to filename
:q	Quit .In vim ,also exists from help
:q!	Quit without saving.
:wq	Write to the file and quit (see also “ZZ”).
:r filename	Read in file (handy for “cut and paste” between two different files).
:e	Exit (without saving).
:e!	Exit immediately, and don't ask about saving.
:d	Delete the current line.
:h	Go to online help.
:j	Delete the line below the cursor.
:n	If you specified multiple files on the command line, go on to edit the next file.
:u	Undo the last operation.
:x	Quick exit. Saves the file without being asked.
:n	Go to line number n.
:-n	Go up n lines.
:+n	Go down n lines.