Meaning/usage of $_ in bash
Thomas Charron
twaffle at gmail.com
Wed Jul 23 13:21:56 EDT 2008
On Wed, Jul 23, 2008 at 12:57 PM, Michael ODonnell
<michael.odonnell at comcast.net> wrote:
> This is just a nit but I've never understood the meaning/usage
> of the $_ variable in bash. I did RTFM and it says:
> "When bash invokes an external command, the variable $_ is set to
> the full file name of the command and passed to that command in its
> environment."
> ...which seems to describe one piece of how it actually works in one
> situation. For example, if I create and execute a shell script thus:
I had always known the $_ to contain the last paramater of the last
command. Param lists include the exe, so no param, last param = the
exe.
--
-- Thomas
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