Checker

Angelegt Dienstag 25 Juli 2023

#!/bin/bash
# checker - show open connections

if [[ $1 ]]
then

case $1 in

-*) echo "checker: show & log open udp|tcp ports. Logfile is ~/checker.log";

echo "usage: checker [n] - optional n is the time in seconds between updates. if n is not specified 2 is used.";
echo "related commands: newchecker - delete logfile, checkerlog - show checker.log";;

*) clear ; while true ; do date | tee -a ~/checker.log ; sudo lsof -i | tee -a ~/checker.log ; sleep $1 ; clear ; done;;

esac

else

clear ; while true ; do date | tee -a ~/checker.log ; sudo lsof -i | tee -a ~/checker.log ; sleep 2 ; clear ; done

fi
exit 0

(noch eleganter aber ohne Datum ist natürlich die Verwendung das 'watch'-Befehls:)

watch -n 2 "date |sudo lsof -i | tee -a ~/checker.log"