Linux Administration

If you have a dedicated server or a VPS, chances are you are the only Administrator/root user who needs to maintain it from SSH or command line. That means, you also get a *hitload of email alerts from your server about botnets trying to access your servers SSH port. There’s …

I got a long password with a passphrase that contains some numbers. So when I type in my password, I instinctively use NumPad to type it in. Guess what? Kali Linux doesn’t enable NumLock by default on startup. So I press Enter and it says I entered wrong password. This …

This is something I need quite often when I setup a new VPS or Virtual Machine in the cloud. I use multiple cloud infrastructures that includes Azure, Amazon AWS, DigitalOcean, CloudatCost and InterServer. All of them has pre-set Virtual Machine or ISO that you can simply deploy using a few …

I’ve compiled a list of handy MySQL commands that I use very frequently  in a headless server. I am not a MySQL guru, so I decided to braindump everything in here. This covers random issues from WordPress slowness, Query Cache Modification, User Creation, Database dumping and importing, rsync’ing large files …

This is a simple guide on how to change GRUB background in Kali Linux (i.e. it’s actually Kali Linux GRUB splash image). Kali dev team did few things that seems almost too much work, so in this article I will explain one of two things about GRUB and somewhat make …