Re: OT: Sed/Perl script tp comment out specifc line

["Anthony E. Greene" <agreene pobox com>]

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On Fri, 31 Aug 2001, Chuck wrote:
>I have about 200 remote servers that run a custom application each with
>a tailored config file (ie no two are the same). I need to comment out 2
>lines that are the same in every file for all 200 servers. What is the
>easiest way to do this? I currently use rsh to manage these servers so I
>wanted to create a script, either in perl or sed, that can modify the
>file, distribute this script to each host and execute it there.
>
>How would you guys go about this?

This sounds like a perfect job for a shell script using sed. Make a backup
of the file, then pipe the original through sed into a tempfile. The
tempfile should be exactly two bytes bigger than the original. You can
check it with: 

  let origsize=`ls --block-size=1 -s origfile  | cut -f 1 -d ' '`
  let tempsize=`ls --block-size=1 -s tempfile  | cut -f 1 -d ' '`
  let diffsize="tempsize-origsize"
  if [ $diffsize = 2 ]; then
    cat tempfile > origfile
  else
    echo 'sed filter failed'
    exit 1
  fi


Tony
- -- 
Anthony E. Greene <agreene pobox com> <http://www.pobox.com/~agreene/>
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