Ubuntu is based on Debian and all software packages are .deb files. Most software packages are free available from Ubuntu Repositories. Adding and removing software and System Update are critical…
After installing a new Linux kernel, old kernels are not automatically deleted. They remain in your disk (/boot partition). You have to delete them manually. Why? The main reason is…
In Ubuntu, Grub boot menu is hidden by default. You can display it by pressing "SHIFT" continuously at boot time. This is useful (among other cases) in case you want…
After update Debian (or Ubuntu) using apt-get update && apt-get -V upgrade you need to know which services need restart and if system reboot is required (kernel upgrade). A common…
More and more companies use SSL certificates (small data files that digitally bind a cryptographic key) to protect their customers sensitive data, as username, password and credit card number, as…
