From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-users@zsh.org
Subject: Re: Check existence of a program
Date: Tue, 01 Feb 2011 12:16:56 -0800 [thread overview]
Message-ID: <110201121656.ZM18559@torch.brasslantern.com> (raw)
In-Reply-To: <4D4850F7.6060205@gmail.com>
On Feb 1, 11:59pm, Anonymous bin Ich wrote:
}
} % cat notworking.zsh
} #!/bin/zsh
} set -x
} prog="exiftime"
} path=$(which ${prog})
As has already been pointed out, assigning to $path alters the value of
$PATH, which makes it impossible to find any other executables.
One way to prevent yourself from getting into trouble with this:
readonly path
Now you can still assign to PATH (and the new value is reflected in
the $path array), but you can't accidentally stomp on it via direct
assignment to path.
next prev parent reply other threads:[~2011-02-01 20:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-01 18:29 Anonymous bin Ich
2011-02-01 19:01 ` Julien Nicoulaud
2011-02-01 19:16 ` Benjamin R. Haskell
2011-02-01 19:16 ` Jérémie Roquet
2011-02-01 20:16 ` Bart Schaefer [this message]
2011-02-01 21:39 ` Atom Smasher
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