File: update-zapper

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adzapper 20050316-1sarge1
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#!/bin/sh
#
# UNTESTED sample script to update the zapper script from the master copy on
# my web page.	- Cameron Simpson <cs@zip.com.au> 21jun1999
#
# "wget" can be obtained from:
#	http://sunsite.auc.dk/wget/
#

masterurl=http://adzapper.sourceforge.net/scripts/squid_redirect
zapper=/usr/bin/adzapper		## hack to suit your site
pidfile=/var/run/squid.pid		## hack to suit, again

tmp=/tmp/newzapper$$
if wget -q --cache=off -O $tmp "$masterurl"
then
    [ ! -s "$tmp" ] \
    || cmp -s "$tmp" "$zapper" \
    || ( cat "$tmp" >"$zapper" || exit 1
	 [ -s "$pidfile" ] && kill -1 `cat "$pidfile"`
       )
fi
rm -f "$tmp"

exit 0