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From: "Dan Luther" <dan@theluthers.net>
To: <zsh-users@zsh.org>
Subject: Using variables in command substitution
Date: Mon, 14 Jun 2010 01:18:13 -0500	[thread overview]
Message-ID: <001201cb0b89$63e2e3b0$2ba8ab10$@net> (raw)

[-- Attachment #1: Type: text/plain, Size: 779 bytes --]

Hello, 

 

I'm hoping someone can explain this. 

 

I'm trying to unify my .zshrc across a couple of platforms, and I ran across
an interesting ZSH behavior. Essentially, I want to assign a variable to the
name of a specific command for later substitution:

 

  if [$(uname)="SunOS"]; then

    ME="/usr/xpg4/bin/id -un"

  elif [$(uname)="Linux"]; then

    ME="id -un"

  else
    ME="who am i | cut -d ' ' -f1"

  fi

 

  HNAME=$(uname -n | cut -d. -f1)

. . .

 

cd() { chdir "$@"; prompt="[$($ME)@$HNAME] $(pwd)> "; }

 

 . . . 

 

 

When I try to use the "cd" redefinition, I get: 

 

.zshrc: no such file or directory /usr/xpg4/bin/id -un

 

Is it possible to use variables in command expansion at all, or am I just
doing it wrong?

 

Thank you for your time.


             reply	other threads:[~2010-06-14  6:48 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-14  6:18 Dan Luther [this message]
2010-06-14  9:02 ` Peter Stephenson
2010-06-14 14:58   ` Dan Luther
2010-06-14 13:36 ` Benjamin R. Haskell
2010-06-14 16:57   ` Dan Luther

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