Blog.Project13.pl

Yes, my GNU/Linux skills have been certified and now I can call myself a Red Hat Certified Technician as I’ve today passed the RH-202 exam with a 100% score – which leads me to the idea that I should have tried to tackle RHCE and not RHCT – I’ll do ir eventually someday I guess [...]

Vim is a really amazing text editor (though I’d like to learn Emacs too soon… :-)) and it can be easily expanded to be even more useful. One super cool extension I found is: vis – it allows powerful sed-like line modification (you could use sed from inside vim, but that’s not really “handy”). Vis [...]

Another Command Line Fu oneliner I’ve sumbited today: #show X window events in chosen window $ xev -id `xwininfo | grep 'Window id' | awk '{print $4}'` EnterNotify event, serial 13, synthetic NO, window 0×6400053,     root 0x13c, subw 0x640005b, time 42431610, (367,0), root:(369,63),     mode NotifyNormal, detail NotifyVirtual, same_screen YES,     [...]

A simple yet usefull command-line-fu I made up: #list all internet active apps $ netstat -lantp | grep -i establ | awk -F/ '{print $2}' | sort | uniq   firefox java pidgin thunderbird-b Lookup this command at CommandLineFu Thanks to HarimaKenji for fixing a little issue with this command. —update— CommandLineFu user submited a [...]

I recently had this following fatal error on an CentOS VPS server: Loaded plugins: fastestmirror error: no dbpath has been set error: cannot open Packages database in /%{_dbpath} Traceback (most recent call last): File “/usr/bin/yum”, line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File “/usr/share/yum-cli/yummain.py”, line 229, in user_main errcode = main(args) File “/usr/share/yum-cli/yummain.py”, line 84, in [...]

Let’s drop a little humor in this time… You, brave Terminal Hero, shall kill -9 the daemon that has hidden itself in one of those files! We don’t know in which file you can find it though! We’re running out of time! The kingdom of GNU will be rm -rf‘d if you won’t make it [...]

A great bash feature I just discovered is the “^blabla^bla” command (is it a “command” by the way..?) If typing stuff quickly by hand, typing mistakes (typos) happen… And it’s not really fast to fix them by using UP ARROW and then fixing the command by “hand”… A better, quicker way to do this is [...]

I really love the Exaile gnome music player, and not so long ago version 0.3.0 was released. First thing i did was of course wget && tar xzvf && make && su -c ‘make install’ ;-) but… I’d rather have a version from the repository, to update it easily. As no package for Fedora 11 [...]

I recently had to migrate a big website – about 5GB – to a new server. That could take a while to do, right? Well, maybe if you did it like that (the not smart way): Thanks goodness I’m not really keen on doing stuff the slow “not_smart” way, and the new server is a [...]

Tym razem małe polecenie włączające zewnątrzny plik mp3 (z ogg zadziała tak samo): #poniższe polecenie bierze plik old.avi, i łącząc go z sound.mp3 (zachowując jego codec audio) tworzy plik new.avi mencoder old.avi -o new.avi -ovc copy -oac copy -audiofile sound.mp3 #analogicznie możemy wziąć plik audio w innym formacie i przetworzyć go np na mp3, wtedy [...]