Wow, what a day! Some great stuff today It ended with configuring a kickstart file, starting an unattended installation via PXE by referring to said kickstart file on an http-server. Before that we were playing with partitioning, making swap, encrypting with cryptsetup and LUKS. Also very interesting. After we learned …

I wrote in the preparation that there were no 'set up ftp/www service'. What do you think we did today in the course? Set up vsftpd and httpd :) Ssh hardening, set up vnc server, configure firewall via gui, ntp setup. Stuff like that. It's getting closer! I believe tomorrow …

First day done! What hit me was that there are many commands in linux, some you maybe only use for one purpose. But there are some things that you haven't done with it before, so an old command can still cause some trouble. For example crontab and the last * (or …

[toc] https://github.com/mconigliaro/RHCE-Cheat-Sheet Found this "cheat sheet" for RHCE. Sure it doesn't specifically say RHCSA but honestly there's a lot of good commands in there. Some things obviously might be too advanced for RHCSA, such configuring an dns/named service. But it might be good as a …

This is how to create simple RRD graphs using one data source that can be 0 and above. It is not an "ever increasing" counter. It will look like this: 1. Create the rrd database I wrote this down in a .sh file so I can go back later and …

Not allowing root to log in By default sshd is running on SL6 and you can ssh in with 'root'. Probably a good idea to change this in /etc/ssh/sshd_config permitrootlogin no But first, create a user that can log in. useradd mart passwd mart Then you can change …

Here's a great CLI file browser for Linux. It also gives a preview of text files. It's called Ranger. Do check it out. Here: https://bbs.archlinux.org/viewtopic.php?id=93025 This was also my introduction to 'git'. Quite easy :) git clone git://git.sv.gnu.org/ranger.git …

Hey! This is used for me on my Linux workstation to get a notification if there is a new spotify release whenever I open a new terminal.. It would be applicable for other (probably also simple) pages that aren't updated frequently. Reason: http://repository.spotify.com/pool/non-free/s/spotify …

Time for another 'do-release-upgrade'! This took away dwm-tools and suckless-tools (amonger other stuff). This means that META+p does not work anymore. So you cannot start any apps. Just install them again with 'sudo apt-get install dwm' and you're good to go. Don't even need to restart anything. Found this …

See the post for how to install spotify on a Linux Client (RHEL 6 x64 in my case). This post is for how to upgrade. 2012-02-01: Updated, added --nodeps to the rpm upgrade. 2013-01-08: This has been confirmed to work with spotify-0.8.8, updated typo in symlink part. Why …