Create file if not exist with bash
If you need your bash script to create file if it doesn`t exist:
[[ -f /path/filename ]] || touch /path/filename
Tag: bash
Reset arp entry if client is not answering
#!/bin/sh
clients=`arp -a | grep -v 10.254.0.1 | grep 10.254.0. | awk '{print ($2)}' | tr -d \)\(`
#echo $clients
for i in $clients
do
if ping -c 1 -t 1 $i | grep "0 packets received";
then
arp -d $i
# echo "not ok"
else
# echo "ok"
fi
done