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Set correct Timezone
Howto set the correct timezone in Linux Ubuntu Get all possible timezones: timedatectl list-...
Fix Error fwupd-refresh
Introduction After installing monitoring (check_mk) I realized that the servis fwupd-refresh pro...
Tutorial on ufw
UFW, or Uncomplicated Firewall, is a simplified firewall management interface that hides the comp...
Flush DNS Cache Unbuntu
Introduction Ubuntu caches DNS queries local. As long as the DNS address of a node does not chan...
PVE - Can't lock file
Can't lock file https://dannyda.com/2020/05/1 1/how-to-fix-proxmox-pve-cant-lock-file-var-lock-q...
Boot into recovery mode
Intel based Reboot and press: Command-R: Start up from the built-in macOS Recovery System. Us...
How to Disable SIP
Introduction System Integrity Protection (SIP) SIP protects MacOS from cyber attacks. However, ...
MacOS - Privacy hint / OCSP patch
Introduction The Online Certificate Status Protocol (OCSP) is an Internet protocol used for obta...
MacOS - Flush DNS Cache
Introduction For some reasons Apple nurses a bug in the DNS resolver. This leads to the problem,...
PVE - No quorum error
Introduction A typical error on a PVE cluster is No Quorum error It can happen, when other mac...
PVE - VM does not stop
Introduction Sometimes a virtual machine cannot be stopped from the GUI. Resolution qm stop <n...
Set system time automatically
Introduction It is possibly to set and synchronize the time in Linux automatically through the ...
Set system time automatically on Linux
Introduction It is possibly to set and synchronize the time in Linux automatically through the s...