postinst is in wireless-tools 30~pre9-8ubuntu1.
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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | #!/bin/sh -e
mv_conffile() {
local OLDCONFFILE="$1"
local NEWCONFFILE="$2"
[ -e "$OLDCONFFILE" ] || return 0
echo "Preserving user changes to $NEWCONFFILE ..."
mv -f "$NEWCONFFILE" "$NEWCONFFILE".dpkg-new
mv -f "$OLDCONFFILE" "$NEWCONFFILE"
}
case "$1" in
configure)
if dpkg --compare-versions "$2" le "30~pre9-2"; then
mv_conffile "/etc/network/if-up.d/wireless-tools" "/etc/network/if-pre-up.d/wireless-tools"
mv_conffile "/etc/network/if-down.d/wireless-tools" "/etc/network/if-post-down.d/wireless-tools"
fi
esac
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