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 …

http://sourceforge.net/projects/freenas/files/FreeNAS-8.0.3/README/download There is a new FreeNAS version out. But no mentioning of ZFS version 28 (deduplication). Why is this taking so long? Will that never be included so that people buy TrueNAS instead? Annoying :p

[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 …

The Past I used to run FreeBSD 5 and 6 about eight years ago on a Pentium III 900MHz machine with maybe 768MB RAM. It was very slow but after a lot of tinkering with the kernel I got it to boot and run very nicely. Fluxbox was the window …

"tits up" - http://www.theregister.co.uk/2011/11/21/fasthosts_outage/

Do you print pictures or keep all of them online? What about if you've written a lot of text on some obscure blog on the Intertubez. What if something happens and you can't retrieve it? Maybe this is just because I just started reading a post-apocalypsian book where an EMP …

Trying out osol-dev-134-x86.iso in vmware workstation. You can download it from here: (genunix.org doesn't work anymore - here is another place: http://okcosug.org/. Update 201308 this also broke. You can now use http://virtualboxes.org/images/opensolaris/) Host OS: Core i7 with Windows x64. 1 core and 1300MB …

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 …