How to Display Grub Menu at Boot Time in Ubuntu
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…
When to Restart Services or Reboot after Update on Debian or Ubuntu
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…
How To Create Fast And Reliable Backup Using Rsnapshot
rsync is probably the most common solution for backup on Linux, because it is extremely fast and makes incremental backups (transfer "only differences" between two versions of a file), which…
Update Postgres Major Version in Debian Jessie
Postgresql update is not a trivial task. According to PostgreSQL Versioning policy: A major release is numbered by increasing either the first or second part of the version number, e.g.…
A Simple Guide to Obtain and Install an SSL Certificate
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…
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