This file is indexed.

prerm is in libruby1.8 1.8.7.352-2ubuntu1.6.

This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.

The actual contents of the file can be viewed below.

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#! /bin/sh

set -e

case "$1" in
    purge|remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear|deconfigure)
    	if [ -w /usr/local/lib -a -e /usr/local/lib/site_ruby/1.8 ]
       	then
    	    rmdir /usr/local/lib/site_ruby/1.8/x86_64-linux 2>/dev/null || true
    	    rmdir /usr/local/lib/site_ruby/1.8          2>/dev/null || true
    	    rmdir /usr/local/lib/site_ruby              2>/dev/null || true
       	fi
	;;

    *)
        echo "postrm called with unknown argument \`$1'" >&2
        exit 0

esac