apt-get update failed because certificate verification

Ubuntu apt-get update shows Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake:

Update Date, Time, Timezone on Ubuntu

Use timedatectl command to view and change time, date and timezone in Ubuntu

Fix print_req_error: I/O error, dev fd0, sector 0

In fresh Ubuntu installation, fix print_req_error: I/O error, dev fd0, sector 0
Ubuntu IP Address Configuration

Ubuntu installation loop after mentioning static IP address

Ubuntu installation process is continuously returning back to the beginning when you setup static IP address in the network configuration. In order to overcome this…
Ubuntu Orange Screen - VM Display Memory

Fix orange state of Ubuntu virtual machine in VirtualBox

When you experience problem with Ubuntu virtual machine stuck on Orange screen without desktop access, you can overcome it by increasing video memory of VM.

Disable Secure Boot in Ubuntu

Disable Secure Boot in Ubuntu Virtual Machines without rebuilding entire server.

Create permission in local XAMPP server in Ubuntu

Follow this single step to assign write permissions in XAMPP htdocs folder in Ubuntu in order to access your hosted web application without permission issues.