Petr’s blog about Linux

This page contains few information how to create crypted disk using dm_crypt, lvm, gpg with remote key stored on http server. The advantage is to have key, used for unlocking crypted disk(s), somewhere on the server instead have it on USB. * You can easily delete this key if your disks are stolen and nobody [...]

Look at small how-to install cobbler with yum on RHEL 4.6 from scratch. Install the most RHEL 4.6 or CentOS 4.6 with default partitioning and custom installation (unselect all possible packages during installation procedure). Diable firewall and SELinux. Enable DVD repository by changing the line in /etc/yum.repos.d/CentOS-Media.repo enabled=1 Install yum mount /media/cdrom Download packages and [...]

It’s happened to me one time, that I want to trim margins from PDF document. It was a manual for Panasonic G1 camera: http://ftp.xvx.cz/pub/docs/my/panasonic_g1.pdf You can see huge margins there, because it was officially written for A5 paper and they create manual for A4. See the picture: I used pdfcrop script from Heiko Oberdiek, which [...]