If you have a Ubuntu system (whether a Server or not), you should consider keeping periodical images of the whole systems as backups; This is actually very important in the case your system has been compromised or hacked, or you simply messed up something and need to go back to a specific point in time.
This tutorial will show you how to un-delete a branch from the remote repository, if you happen to delete it by mistake. This tutorial will work even if you used the
-D option while deleting which stands for force delete.
HStore is a key value store within
Postgres. You can use it similar to how you would use a dictionary within any other programming language, though it’s specific to a table column in the database.
When you start learning a new programming language, you usually start with the obligatory Hello World! project. It is a good starting point to learn programming, and it makes you feel happy for achieving something.