From: "Benjamin R. Haskell" <zsh@benizi.com>
To: TJ Luoma <luomat@gmail.com>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: how to refer to basename of $0
Date: Thu, 28 Jul 2011 20:44:52 -0400 (EDT) [thread overview]
Message-ID: <alpine.LNX.2.01.1107282034110.18508@hp.internal> (raw)
In-Reply-To: <CADjGqHuKhx9A3HCUBjU4JgRsbj52s7DQ6HGewT=Y9uRMDGD-fg@mail.gmail.com>
On Thu, 28 Jul 2011, TJ Luoma wrote:
> I am trying to move a bunch of my scripts to zsh instead of bash
> because I'm starting to run into little differences in the way things
> are handled which are annoying, and I figured it made more sense to
> just learn one way rather than two.
>
> I have a ".source" file that I use to setup some functions and
> variables for use in my scripts, and one of the things it does it
> this:
>
> NAME=`basename $0`
>
> which, in bash, gives me the basename of the script. For example, if
> the script "foo.sh" read .source like this:
>
> . $HOME/.source
>
> and then I did
>
> echo "$NAME"
>
> it would give me
>
> foo.sh
>
> but in zsh I get
>
> zsh
Sounds like you're not actually 'source'-ing the script. $0 should give
you the script name in that case. $0 will vary if it's in the top-level
scope or inside a function, though. For finer-grained control, you can
use the '(%)' parameter expansion flag on the string "%x". (also see
%N, but that has the same caveats as $0, AFAIK.)
Try the script below, running in these several ways:
. ./basename-0.zsh
./basename-0.zsh
eval "$(<basename-0.zsh)"
--
Best,
Ben
$ cat > basename-0.zsh <<'SCRIPT'
#!/bin/zsh
echo 0 outside: $0:t
afunction () { echo 0 in afunction: $0:t }
afunction
() { echo 0 in anon: $0:t }
echo 0 in a subshell: "$(/bin/echo $0:t)"
echo %x outside: ${${(%):-%x}:t}
anotherfunc () { echo %x in anotherfunc: ${${(%):-%x}:t} }
anotherfunc
() { echo %x in anon: ${${(%):-%x}:t} }
echo %x in a subshell: "$(/bin/echo ${${(%):-%x}:t})"
SCRIPT
$ chmod +x basename-0.zsh
next prev parent reply other threads:[~2011-07-29 0:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-28 22:55 TJ Luoma
2011-07-28 23:54 ` Tomasz Moskal
2011-07-29 0:24 ` Phil Pennock
2011-07-29 1:30 ` Tomasz Moskal
2011-07-29 0:44 ` Benjamin R. Haskell [this message]
2011-07-29 1:39 ` TJ Luoma
2011-07-29 2:06 ` Tomasz Moskal
2011-07-29 4:04 ` Bart Schaefer
2011-07-29 4:50 ` TJ Luoma
2011-07-29 11:48 ` Tomasz Moskal
2011-07-29 14:08 ` Benjamin R. Haskell
2011-07-29 22:30 ` Bart Schaefer
2011-07-30 19:43 ` Greg Klanderman
2011-07-29 3:05 ` TJ Luoma
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