Fix bad grep

wol/scripts/sendmac.sh

@@ -18,7 +18,7 @@
 
 IP=$(ip a | awk '/inet.*containers/ {print $2}' | cut -d / -f 1)
 netcat="netcat -l $IP 9999"
-KPID=`ps aux | grep \'$netcat\' | awk '{print $2}'`
+KPID=`ps aux | grep "$netcat" | awk '{print $2}'`
 [ ! -z "$KPID" ] && kill $KPID
 
 subnet=$(ip a | awk '/inet.*containers/ {print $2}' | cut -d / -f 1 | cut -d . -f 1-3)