man test
use [ instead of [[, the parameters should be the same
> * Testing if a directory exists (-d)
> * Testing if a file exists (-a)
> * Testing if a file is executable (-x)
--
BR,
Tony Wang
On Tuesday, July 16, 2013 at 19:23, Attila Györffy wrote:
> Hi all,
>
> I’ve been a zsh shell user for a while and after I’ve discovered fish shell,
> I became interested in it and decided to slowly migrate to it. I currently
> have a couple of expressions and settings in .zshenv and .zshrc that I’d like
> to port to the fish configuration.
>
> My question is the following:
>
> Does fish have a mechanism to tell if a directory exists? This could be extra
> useful to set environment variables based on that condition. The POSIX
> equivalent looks like this:
>
> if [[ -d "${HOME}/.bin" ]]; then
> export PATH=~/bin:${PATH}
> fi
>
> I’d like to see how to use the same (and similar) functions in fish shell,
> such as...
>
> * Testing if a directory exists (-d)
> * Testing if a file exists (-a)
> * Testing if a file is executable (-x)
>
> Thanks in advance,
>
> — Attila
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