Boot iso image from GRUB2

This post shows how to boot clonezilla image from local disk with Grub2.

Function for removing keys from known_hosts

When connecting via ssh to a remote host you are asked to confirm the key fingerprint. This is added to ~/.ssh/known_hosts file so no further confirmation is required.
What about when the remote key has changed? You need to delete the key from this file.
I've written a small function to make this deleting easier, just by typing one command:

sshrm-key <nr>

My .screenrc

Hi, in this post I'll show you my configuration file for GNU screen.
For those who doesn't know what screen is, it's a full-screen window manager that multiplexes a physical terminal between several processes.
You can open terminal tabs in it, detach it and later reattach and continue you work and many many more like for example session sharing.