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|
#!/bin/sh
arg0="`basename $0`" # base portion of our filename
arg1="$1"
tmpfile="/tmp/resolv.conf.$$"
usage ( ) {
echo "usage: $arg0 -a|-r {ip} [{ip}...]"
rm -f $tmpfile
exit 1
}
[ "$#" -le 1 ] && usage
shift
[ -f /etc/resolv.conf ] && cp /etc/resolv.conf $tmpfile
case "$arg1" in
"-a")
for ip in "$@"; do
echo $ip
grep -sq "^nameserver $ip\$" $tmpfile || echo "nameserver $ip" >>$tmpfile
done
;;
"-r")
for ip in "$@"; do
grep -v "^nameserver $ip\$" $tmpfile >$tmpfile.2
mv $tmpfile.2 $tmpfile
done
;;
*)
usage
;;
esac
[ -f $tmpfile ] && cp $tmpfile /etc/resolv.conf
rm -f $tmpfile
exit 0
|
