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Re: ignoring comments in a 'cat' call

From: Chris F.A. Johnson
Subject: Re: ignoring comments in a 'cat' call
Date: Wed, 7 Oct 2009 22:58:39 -0400 (EDT)
User-agent: Alpine 2.00 (LMD 1167 2008-08-23)

On Wed, 7 Oct 2009, Tamlyn1978 wrote:

> I have a file with a list of programs with comments describing what they do,
> e.g.
> unison # file syncronisation
> grass # gis program
> I have a script, which I run as root and includes the command:
> address@hidden:~$ aptitude install $(cat programs) -y
> where 'programs' is the file with the list of programs. Aptitude does not
> ignore the '#' comments, reading them, and the subsequent comment text as
> package files.
> Is there a way to make 'cat' ignore the comments or is there a better
> alternative to cat in this case?

aptitude install $(cut -d ' ' -f1 programs) -y

   Chris F.A. Johnson, webmaster         <http://woodbine-gerrard.com>
   Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)

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