A file that contains initialization commands is called a "vimrc" file.
Each line in a vimrc file is executed as an Ex command line. It is
sometimes also referred to as "exrc" file. They are the same type of
file, but "exrc" is what Vi always used, "vimrc" is a Vim specific
name. Also see |vimrc-intro|.
Recommended place for your personal initializations:
OS/2 $HOME/.vimrc or $VIM/.vimrc (or _vimrc)
MS-DOS and Win32 $HOME/_vimrc or $VIM/_vimrc
Amiga s:.vimrc or $VIM/.vimrc
If Vim was started with "-u filename", the file "filename" is used.
All following initializations until 4. are skipped.
"vim -u NORC" can be used to skip these initializations without
reading a file. "vim -u NONE" also skips loading plugins. |-u|