## 12.2. Important Command-Line Arguments

Although vile does not expect to be invoked as either vi or ex, it can be invoked as view, in which case it will treat each file as read-only. Unlike the other clones, it does not have a line-editor mode.

Here are the important vile command-line arguments:

`-?`
  vile prints a short usage summary and then exits.
`-g` `N`
  vile will begin editing on the first file at the specified line number. This can also be given as `+``N`.
`-s` `pattern`
  In the first file, vile will execute an initial search for the given pattern. This can also be given as `+/```pattern``.
`-t` `tag`
  Start editing at the specified tag. The `-T` option is equivalent, and can be used when X11 option parsing eats the `-t`.
`-h`
  Invokes vile on the help file.
`-R`
  Invokes vile in "readonly" mode, no writes are permitted while in this mode. (This will also be true if vile is invoked as view, or if `readonly` mode is set in the startup file.)
`-v`
  Invokes vile in "view" mode, no changes are permitted to any buffer while in this mode.
`@``cmdfile`
  vile will run the specified file as its startup file, and will bypass any normal startup file (i.e., .vilerc) or environment variable (i.e., `VILEINIT`).

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