Re: zsh portable script

[Joke de Buhr <joke@seiken.de>]

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On Monday 12 July 2010 17:37:19 Joke de Buhr wrote:
> On Monday 12 July 2010 16:46:22 Atom Smasher wrote:
> > on freebsd, zsh installs as /usr/local/bin/zsh. on linux (and most other
> > systems?) it installs as /usr/bin/zsh.
> > 
> > what's the best way to make zsh script portable between linux and
> > freebsd?
> > 
> > i could start the script with:
> >  	#!/usr/bin/env zsh
> > 
> > or i could specify that the script be executed as:
> >  	zsh script
> > 
> > is there a better way?
> 
> Using env doesn't solve the problem either. There is no guarantee the "env"
> program is installed under /usr/bin/env. It may as well be installed under
> /usr/local/bin/env.
> 
> But every unix should have a bourne shell compatible shell located at
> /bin/sh. You can use a bourne shell compatible code snippet and call zsh
> from it. If PATH contains zsh than this will do the trick.
> 
> 
>   #!/bin/sh
> 
>   if [ -z "$ZSH_VERSION" ]; then
>       ## searching PATH for zsh executable
>       exec zsh $* < $0
> 
>       ## no zsh detected
>       exit 1
>   fi
> 
>   ## zsh should be running now. do zsh stuff
>   print "hello"

sorry, the correct version should be:

  #!/bin/sh
  
  if [ -z "$ZSH_VERSION" ]; then
      ## searching PATH for zsh executable
      exec zsh $0 $*

      ## no zsh detected
      exit 1 
  fi

   ## zsh should be running now. do zsh stuff
  print "hello"

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