Archive for the 'Computer' Category
Saturday, December 20th, 2008
I blogged about some tips for optimizing the workflow on the command line in my advent calendar already (like irssi backlog completion, Zsh keybindings and hashes in the zsh). When optimizing your workflow you should be aware of what exactly is eating up your time. Start with evaluating your top 10 shell commands, in Zsh […]
Posted in Computer, English | Comments Off on mika’s advent calendar – day 20: lazy typing
Friday, December 19th, 2008
One of the reasons why Zsh rocks so much is its completion system. Tab, tab, tab…. Using default Zsh without an useful configuration? Then start with loading the completion system: autoload -U compinit && compinit Now check out the completion system with tools that provide lots of options, like for example gpg and rsync. Then […]
Posted in Computer, English | 1 Comment »
Thursday, December 18th, 2008
grml-live is a buildsystem for generating a grml and Debian based Linux live system (CD/ISO). It’s based on FAI (I mentioned FAI a few days ago already) because its class concept provides a flexible infrastructure for building custom systems. grml-live uses squashfs-tools for building a compressed file (so you can get >2GB on a 700MB […]
Posted in Computer, English | Comments Off on mika’s advent calendar – day 18: grml-live
Wednesday, December 17th, 2008
ldapvi is an interactive LDAP client for Unix terminals. Using it, you can update LDAP entries with a text editor. Start exploring it running: ldapvi –discover –host $SERVER If you have to deal with LDAP on the command line and want to use $EDITOR for editing: ldapvi is for you. :)
Posted in Computer, English | Comments Off on mika’s advent calendar – day 17: ldapvi
Tuesday, December 16th, 2008
Configuration management tools provide the ability to abstract your requirements. For example you might be running your own (procedural) scripts – which could be even platform specific (igitt) – to add new users. Instead when using a configuration management tool you instruct the system in a (declarative) specification language to do so. This provides much […]
Posted in Computer, English | Comments Off on mika’s advent calendar – day 16: puppet
Monday, December 15th, 2008
Frank Terbeck, a grml developer, implemented vcs_info for the Zsh. vcs_info is a nice and flexible system for providing version control information information within the Zsh prompt. It provides support for bzr, cdv, cvs, darcs, git, hg, mtn, p4, svk, svn and tla. vcs_info is available since zsh-beta, version 4.3.6-dev-0+20080929-1 or later and using the […]
Posted in Computer, English | 1 Comment »
Sunday, December 14th, 2008
Seriously, if you don’t know GNU screen yet: where are you living? 8-) Screen is a full-screen window manager that multiplexes a physical terminal between several processes, typically interactive shells. If you want to leave (not exit) your current shell session(s) and re-attach them later again: GNU screen is the answer. If you don’t use […]
Posted in Computer, English | Comments Off on mika’s advent calendar – day 14: gnu screen / tscreen
Saturday, December 13th, 2008
Displaying more with less: lesspipe.sh is an input filter for the pager less as described in its man page. The script runs under a ksh compliant shell (ksh, bash, zsh) and allows to view files with binary content, compressed files, archives and files contained in archives. A large and growing number of formats are supported […]
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Friday, December 12th, 2008
Clifford Wolf war ja im September mit 2 Vorträgen zu Besuch in Graz. Jetzt gibt es die Videos dazu online: Vom (MOSFET) Transistor zum (CMOS) Gatter Sourcecode Management mit GIT Die Credits gehen an Wolfgang Dautermann.
Posted in Computer | 1 Comment »
Friday, December 12th, 2008
IPython is an enhanced interactive Python shell. It provides some nifty features the usual python console doesn’t provide. Check out the Quick IPython tutorial, the IPython cookbook, IPython as a system shell and the IPython reference for more information.
Posted in Computer, English | 2 Comments »
Friday, December 12th, 2008
The “Bluetooth Applet 1.8” preferences dialog of the Gnome desktop on Ubuntu is broken: The plus and the trash symbol seem reasonable. But the “connector” and the info button just don’t provide any deterministic behaviour. Thanks for not providing any tooltips so the user might get an idea what the buttons could do for him. […]
Posted in Computer, English, Rants | Comments Off on Funny Dialogs. Not.
Friday, December 12th, 2008
The current release of grml does NOT ship Truecrypt. But why? Truecrypt claims to be a “Free open-source disk encryption software for Windows Vista/XP, Mac OS X, and Linux”. The reason is simple: because the TrueCrypt License Version 2.6 is not a real open source license and does not permit distribution. Quoting section VI./4: 4. […]
Posted in Computer, English, Links, Open Source, Rants | 1 Comment »
Friday, December 12th, 2008
Wie schon einmal gebloggt habe ich mir ja vor Kurzem das LG X110 Netbook gekauft. Was ich bisher feststellen kann: die FUTJISTU-Festplatte ist mir bei intensiver Beanspruchung eine Spur zu laut (es wird Zeit für interessantere Preise bei den SSDs :)) die Lüfterlautstärke ist OK (ich bin da ziemlich sensibel) die Akkulaufzeit ist mit ~2:00-2:30h […]
Posted in Computer, Hardware | 3 Comments »
Thursday, December 11th, 2008
FAI is an automated installation tool to install or deploy Debian GNU/Linux and other distributions on a bunch of different hosts or a Cluster. It’s more flexible than other tools like kickstart for Red Hat, autoyast and alice for SuSE or Jumpstart for SUN Solaris. FAI can also be used for configuration management of a […]
Posted in Computer, English | Comments Off on mika’s advent calendar – day 11: FAI
Thursday, December 11th, 2008
Wenn Anwender neue Möglichkeiten von sich aus entdecken: Kurztipp: grml-small 2008.11 via PXE booten ohne NFS, von Markus Wigge auf pro-linux.de Danke Markus, YMMD.
Posted in Computer, Links, Open Source | Comments Off on Eine der schönen Seiten von Open Source
Wednesday, December 10th, 2008
I assume you already know grml, the Debian based Linux Live-CD for sysadmins and texttool users. Besides booting via CD and USB there’s one further method worth knowing: booting via network. That’s where grml-terminalserver is showing up. Using grml-terminalserver you can boot grml via network. If your computer(s) is/are able to boot via PXE all […]
Posted in Computer, English | Comments Off on mika’s advent calendar – day 10: grml-terminalserver
Tuesday, December 9th, 2008
One of the tools you probably already have on your system but might not be aware of: at. at(1) reads commands from standard input or a specified file which are to be executed at a later time. Some usage examples (notice: you’ll get the <EOT> by pressing ctrl-d, you know): Download something at a given […]
Posted in Computer, English | 1 Comment »
Monday, December 8th, 2008
Not a software tool but something for sysadmins to think about: The Admin Zen. The goal of this cheat sheet is to provide ~100 concise ideas, concepts and rules for sysadmins. Reading them takes a few minutes. Practicing them takes forever. Grab the PDF printout from adminzen.org, send it to the printer and think about […]
Posted in Computer, English | 1 Comment »
Sunday, December 7th, 2008
If you are using Irssi, the terminal based IRC client, you might be interested in a nice script by Florian Ragwitz: backlog completion. Quoting from the script: backlog completion: enter a word prefix and press TAB – and the prefix will be expanded from all the words on the current channel on everything that was […]
Posted in Computer, English | 2 Comments »
Saturday, December 6th, 2008
clive is an open source command line tool to extract videos and to bypass the need to use Adobe Flash in order to view user-generated content available on video-sharing websites. It supports Youtube, Google Video, Dailymotion, Guba, Metacafe, Sevenload and Break. Its usage is as easy as: % clive ‘http://www.youtube.com/watch?v=goTaNrLsny8’
Posted in Computer, English | 2 Comments »