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Accepted
yael
Asked: 2012-11-19 05:52:33 +0800 CST

perl + sed + remove lines that start with "#"

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please advice

I have linux and solaris machines, and I need command that work on both OS

I use the following perl line in order to remove all lines that start with "#" why perl command not work ,

remark - need to support also lines that start with space or TAB and then "#"

 perl -i -pe 'next if /^ *#/' file

.

   more file


   # aa a
       #  bbb 

      #xxx
linux

1 Answers

  1. Best Answer

    this will work on linux maybe also on solaris

    sed -e '/^\s*#/d' file

    EDIT: If \s is not supported maybe this will work...

    sed -e '/^[ \t]*#/d' file

    To do that in file just add -i to the command

    If you don't want consecutive multiple blank lines in the result, just pipe it through uniq

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