Archive for the 'Computer' Category
Saturday, October 14th, 2006
Ich spiele mich gerade ein wenig mit Ruby. (Murphee, du bist mit ‘Tipping the scale: The Ruby features that make the difference‘ nicht ganz unschuldig! ;-)) Um meine Gedanken zu ordnen hier ein bisserl Brain-Dumping… Interessante Debian-Pakete: irb: Interactive Ruby (irb) rails: MVC ruby based framework geared for web application development rdoc: Generate documentation from […]
Posted in Computer | 4 Comments »
Wednesday, October 11th, 2006
% apt-cache show mathomatic: Mathomatic implements most of the rules of algebra for the mathematical operators +, -, *, /, and power (including roots). . Mathomatic can symbolically: – Solve equations; – Completely simplify equations; – Differentiate; – Do sensitivity and finite series analysis; – Combine and solve simultaneous algebraic equations; – Do complex number […]
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Tuesday, October 10th, 2006
Wer diese Nachricht liest hat schon Zugriff auf meinen neuen Server. Bisher hatte ich nur einen virtuellen Rootserver, der eigentlich sehr fein lief (danke, Robert!), aber ich hatte nur 64MB RAM zur Verfügung. Das war mit Streicheleinheiten zwar machbar, aber für mehrere Domains mit doch nicht ganz so wenigen Zugriffen (michael-prokop.at, grml.org, linuxtage.at,…) und den […]
Posted in Computer | 2 Comments »
Saturday, September 30th, 2006
In Top 10 Shell-Kommandos wurde es mir erst so recht bewusst, dass einige meiner Systeme identische Hostnamen haben: grml. Ja, das ist suboptimal. Das hat aber einen simplen Hintergrund: das ist jener Hostname, den der Installer der besten Distribution per Default vorschlägt. ;-) Ergo bin ich jetzt auf der Suche nach witzigen, interessanten, netten Hostnamen. […]
Posted in Computer | 7 Comments »
Monday, September 25th, 2006
Just feeding google in case someone has same problems… Today I once more installed Debian (etch, kernel 2.6.17-2-686) via debootstrap using grml. The system has a ‘MegaRAID Model: LD 0 RAID1 19G Rev: 6.61’ inside and whereas grml booted without any problems, Debian failed with some timeout and FW messages during bootup, like: megaraid mailbox: […]
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Monday, September 25th, 2006
Unable to change virtual machine power state: The process exited with an error: End of error message. Thanks, VMware!
Posted in Computer, English, Rants | 2 Comments »
Sunday, September 24th, 2006
Weil’s grad irgendwie so Mode ist, hier auch mein Listing der ‘Top 10 Shell-Kommandos’: mika@grml ~ % print -l — ${(o)history%% *} | uniq -c | sort -nr | head -n 10 793 mv 703 grep 677 cd 617 vim 537 ls 388 cat 366 scp 353 rm 268 wget 247 dpkg mika@grml ~ % […]
Posted in Computer | 3 Comments »
Wednesday, September 20th, 2006
Tobias Klauser – a grml team member – created inotail. Quoting the README of inotail: inotail is a replacement for the ‘tail’ program found in the base installation of every Linux/UNIX system. It makes use of the inotify infrastructure in recent versions of the Linux kernel to speed up tailing files in the follow mode […]
Posted in Computer, Links | 2 Comments »
Tuesday, September 19th, 2006
Im wahrsten Sinne des Wortes: ‘Last night a grml saved my life‘ – von Jörn. Danke, YMMD – definitiv.
Posted in Computer, Links | Comments Off on Hammergeil!
Sunday, September 17th, 2006
/dev/radio ist ein Computermagazin vom Chaos Computer Club Ulm, das jeden zweiten Sonntag von 13:00 – 15:00 Uhr auf Radio freeFM ausgestrahlt wird. Nachdem dort immer wieder die beste aller Live-CDs erwähnt wird, muss ich im Gegenzug dafür fast mal hier Werbung machen. ;-) Ein ‘grep -c grml $SOUNDDATEIEN’ auf die letzten Sendungen von /dev/radio […]
Posted in Computer, Links | 1 Comment »
Saturday, September 9th, 2006
Today I wanted to test the raid5 reshape feature of Linux kernel >=2.6.17. My testing environment was VMware with 3 virtual disks each containing a partition of 200MB which should be resized to 500MB, using grml (featuring kernel 2.6.17-grml) of course. For real-live setup adjust the steps for stuff like switching harddisks of course. ;-) […]
Posted in Computer, English | 2 Comments »
Thursday, September 7th, 2006
Segmention Fault. Danke für den Hinweis, amne! YMMD. 8-)
Posted in Computer, Links | 2 Comments »
Thursday, September 7th, 2006
vim-outliner let’s you use vim as an outline editor: # apt-get install vim-vimoutliner % $PAGER /usr/share/doc/vim-vimoutliner/README.Debian % vim ~/foo.otl :he vo If you want to export the otl file into HTML take a look at otl2html.py. Oh, did I already mention that vim-outliner is shipped with grml? ;-)
Posted in Computer, English, Links | 2 Comments »
Monday, September 4th, 2006
Das Buch Firewalls im Unternehmenseinsatz von Jörg Fritsch und Steffen Gundel trägt als Untertitel ‘Grundlagen, Betrieb und Produkte’. Als Zielgruppe werden Administratoren und IT-Verantwortliche angeführt. Das Beispiel-Szenario am Anfang (das sich dann auch durch das Buch zieht) schaut vielversprechend aus, und der Anfang liest sich auch wirklich sehr gut. Leider trüben einige Punkte aber die […]
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Monday, September 4th, 2006
iwatch is a realtime filesystem monitoring program. It’s a simple perl script to monitor changes in specific directories/files and send email notification immediately. It reads the dir/file list from a xml config file or via commandline and needs inotify support in kernel (Linux Kernel >= 2.6.13). If you are using Debian/grml you can install a […]
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Sunday, August 13th, 2006
Viel Arbeit war’s, nun ist es soweit: grml gibt es in einer neuen Version. Wir haben X.org 7.0, es gibt 117 neue Pakete. Eine neue Schriftart macht das Leben auf der Konsole noch angenehmer. Die Window-Manager fvwm-crystal und dwm sind dabei. Wer sich mit dem Thema TPM (Trusted Platform Module) beschäftigen will, kann dies – […]
Posted in Computer, Links | 2 Comments »
Friday, August 11th, 2006
Given: server with SCSI disk for the system plus a SCSI storage in the back. The SCSI disk uses another driver than the SCSI storage. Installing Debian etch via grml is no problem, the system disk is /dev/sda, the SCSI storage is bound to /dev/sdb. But: who guarantees that /dev/sda is always the systemdisk? Using […]
Posted in Computer, English, Hardware | 2 Comments »
Friday, August 11th, 2006
Want to install Debian etch? But the Debian etch-ISO does not detect all the necessary hardware? Or it even does not boot at all? Or you just can’t find your Debian etch CD-ROM? Or having $ANOTHER_PROBLEM? Use grml. :-) Take a look at my Debian etch via grml Howto. You can get this tip via […]
Posted in Computer, English, Links | 1 Comment »
Tuesday, August 8th, 2006
A RedHat 9 server had problems with its rpm database. Running strace showed that it’s hanging when accessing /var/lib/rpm/Packages (a Berkeley DB, wondering?). No rpm actions were possible anymore. Solution: # cd /var/lib # cp -a rpm rpm.backup # rm -f /var/lib/rpm/__db* # rpm -vv –rebuilddb
Posted in Computer, English, Rants | 1 Comment »
Tuesday, August 1st, 2006
Yes, online resizing isn’t possible just with xfs but starting with Linux kernel 2.6.10 you can do it with ext3 as well. With e2fsprogs >=1.39-1 new filesystems are created with directory indexing and on-line resizing enabled by default (see /etc/mke2fs.conf). A short demo how online-resizing running on top of LVM works: cfdisk /dev/hda # create […]
Posted in Computer, English, Hardware | Comments Off on ext3 online resizing