Petr’s blog about Linux

Sometimes I’m using the serial connection to my server if anything goes wrong. It’s because I don’t have a monitor/TV attached to it. I have little problems to set it up using Debian in GRUB2 after I upgraded to grub-pc So here is a short way how to do it: Edit file containing configuration in [...]

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 [...]

My photo collection is stored on the server and accessed by cifs protocol to my notebooks. I’m using digiKam to browse my collection in KDE. This software is storing all thumbnails in ~/.thumbnails/ according http://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html and create sqlite database where it stores all information about photos. The advantage is, that these thumbnails can be also [...]