3.2. Linux Performance Tools: CPU and Memory Here begins our discussion of performance tools that enable you to extract the memory performance information described previously.

You should get a grip on the Linux grep command. This is part of the on-going 15 Examples series, where 15 detailed examples will be provided for a specific command or functionality.  Earlier we discussed 15 practical examples for Linux find command,  Linux command line history and mysqladmin command. In this article let us review 15 practical examples of Linux grep command that will be very useful to both newbies and experts.

Un petit pense-bête bien pratique sur les commandes Vim

Advanced Vi Cheat Sheet

“Honey, I shrunk the filesystem!” Recently I bought a solid-state harddisk, an Intel X25M. I wanted to use this disk in my Windows development system, without having to do a fresh install of Windows XP. I really didn’t want to install all my applications again, not to speak of all the custom configurations and tweaks I usually apply to Windows to make it palatable. So I thought I’d just make a image copy of my old harddisk to this new one, and be done with it.

Disclaimer: Use this info at your own risk, don’t come to me if all your data disappears one day. But it works for me.

1. Pré-requis : présentation de GEOM GEOM [1] [2] est un framework d’abstraction d’accès à des raw-devices via des classes (CONCAT, ELI, LABEL, MIRROR, NOP, RAID3, SHSEC, STRIPE, VINUM) ; chaque classe représente un typ1. Pré-requis : présentation de GEOM GEOM [1] [2] est un framework d’abstraction d’accès à des raw-devices via des classes (CONCAT, ELI, LABEL, MIRROR, NOP, RAID3, SHSEC, STRIPE, VINUM) ; chaque classe représente un type d’action sur ces raw-devices. Il est possible de combiner plusieurs classes sur un même device, et ce, dans différents ordres, ce qui éloigne fortement GEOM des autres ” volume managers ” qui ont une typologie beaucoup plus stricte. Un peu de vocabulaire : Une classe implémente un type particulier d’action sur ces raw-devices (disques durs IDE, SATA, SCSI ; clés USB ; fichiers ” filesystem ” montés sur une loopback mdconfig(3)) ; Un provider est le device résultant de l’action de GEOM sur ces raw-devices ; Un consumer est le device sur lequel s’applique la classe, au départ, le device physique. Le handbook comporte un chapitre très complet sur GEOM [3] : ” Chapter 18 GEOM : Modular Disk Transformation “.

http://www.emdebian.org/grip/index.html

Mémento de commandes d’administration pour AIX (≤ 5.x)

sed tutorial � sed introduction � sed examples #1 � sed commands � regular expressions � more sed examples intro home – top of the page – email sed – Stream EDitor – works as a filter processing input line by line. Sed reads one line at a time, chops off the terminating newline, puts what is left into the pattern space (buffer) where the sed script can process it (often using regular expressions), then if there anything to print – sed appends a newline and prints out the result (usually to stdout).