This file is indexed.

preinst is in ifupdown-extra 0.28.

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 "$1" in
  install|upgrade)
    if [ -e /etc/network/network-routes ] ; then
    # There was a bug in the package (<< 0.15). We need to
    # move the file to the new location
        if dpkg-maintscript-helper supports mv_conffile; then
         dpkg-maintscript-helper mv_conffile \
            /etc/network/network-routes /etc/network/routes 0.14 -- "$@"
        fi
    fi
  ;;
esac





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