When you stop Xampp in your linux system and you may get an error, XAMPP Stopping Apache fail apachectl returned 1.
Stopping XAMPP for Linux 1.8.3-5... XAMPP: Stopping Apache...fail. apachectl returned 1. XAMPP: Stopping MySQL...ok. XAMPP: Stopping ProFTPD...kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec] fail. kill returned 1.
…delete the following files:
sudo rm /opt/lampp/logs/httpd.pid sudo rm /opt/lampp/var/mysql/$(hostname).pid sudo rm /opt/lampp/var/proftpd.pid
Note: Replace “$(hostname)” with your device name (for example: localhost or whatever)