Table des matières

Qu'est ce que VNC
Installation de tigervnc

Les utilisateurs
Les services
Le parefeu

Activation des services
La connexion

Qu'est ce que VNC
Pour toutes les informations sur le protocole VNC se référer à l'article Le service VNC
Il faut bien entendu avoir une interface graphique opérationnelle (Ici GNOME)
On met le système à jour :
Code BASH :

yum update

Installation de tigervnc
On installe les paquets Read More →

Install Parallel SSH to connect to multiple hosts.
By the way, PSSH package includes pscp.pssh, prsync, pslurp, pnuke commands and you can use them with the same usage of pssh.

Distributed file systems make files on one computer accessible over the network to other computers
- An example: Sun's NFS network file system
- Provide, if possible, the same semantics as a local file system.

As we can see from the above diagram:
- NFS (network file system) converts user-level command to RPC
- NFS server reverses the process, converts Read More →

Out of the box, enterprise Linux distributions such as CentOS or RHEL come with a powerful firewall built-in, and their default firewall rules are pretty restrictive. Thus if you install any custom services (e.g., web server, NFS, Samba), chances are their traffic will be blocked by the firewall rules. You need to open up necessary Read More →

search [-f | -l | -s] NAME
- Search devices
-f by filename
-l by filesystem label


search -l INTREPID

search -f /boot/grub/menu.lst
hd0,2 hd0,3 hd0,5

search -f /boot/grub/grub.conf

configfile FILE ......
- load a grub.cfg file - make convenient use of the commands and information already typed into the file
- You would Read More →

GRUB's Command Line Interface (CLI) is one of GRUB's most useful and powerful features. GRUB is actually a miniature operating system in its own right and it can take a rich variety of commands and provide useful feedback to the user. GRUB's CLI Mode is one thing that sets GRUB head and shoulders above all Read More →

LVM (Logical Volume Manager) permet de gérer des partitions logiques, et non pas physiques, ce qui a notamment comme avantage de pouvoir plus facilement modifier leur taille.
Partition non formatée
Il faut disposer d'une partition non formatée. Dans notre cas, il s'agit de /dev/sda9, qui dispose d'un peu plus de 300 Go de libres. Cette partition sera Read More →

Re-install bootstrap code (GRUB)
Please perform the following steps:

Boot from CentOS installation disc (for example, CD #1 or DVD).

For CentOS-4 or CentOS-5 type "linux rescue" at the "boot:" prompt. For CentOS-6 pick "Rescue installed system" from the boot menu.

Mount all filesystems in read-write mode.

Change root to real root ('/') on your hard Read More →


Broadcom Corporation BCM4311, BCM4312, BCM4313, BCM4321, BCM4322, BCM43224, BCM43225, BCM43227 and BCM43228 Based Wireless NICs

Step 1: Determining WLAN chip and installing dependencies
Step 2: Downloading and extracting Broadcom driver archive
Step 3: Compiling the Broadcom driver module
Step 4a: Loading the driver module into kernel
Step 4b: Loading the driver module into kernel on boot time

In order to install Read More →

Drivers :
Windows drivers necessary for Netgear WNA3100
Based on:

1. Connect the WNA3100 and:


It should list:

Bus 001 Device 003: ID 0846:9020 NetGear, Inc. WNA3100(v1) Wireless-N 300 [Broadcom BCM43231]

2. Get the latest ndiswrapper source:
At moment of writing: v1.58

3. Unpack in /usr/src or any other directory
4. Make sure to uninstall everyting you have on ndiswrapper:
apt-get purge ndiswrapper-source ndiswrapper-dkms Read More →


1 Introduction
2 Wireless Linux Compatible NICs
3 Common Wireless Networking Terms

3.1 Wireless Access Points
3.2 Service Set ID
3.3 Encryption

3.3.1 Wired Equivalent Privacy
3.3.2 Wi-Fi Protected Access

4 Networking With Linux Wireless-Tools

4.1 Using iwconfig For wireless-tools Configuration
4.2 Permanent wireless-tools Configuration

4.2.1 Fedora / RedHat
4.2.2 Debian / Ubuntu

4.3 WEP Encryption Configuration

4.3.1 WEP Encryption Configuration WEP Key Generation Table 13-1 Byte Count to Read More →

CentOS 6.2 + GNU gdb (GDB) Red Hat Enterprise Linux (7.2-50.el6)
When I debug a simple c++ code with GDB, I saw the following warning:
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.47.el6_2.9.i686 libgcc-4.4.6-3.el6.i686 libstdc++-4.4.6-3.el6.i686

debuginfo-install is a command of yum-utils, so

yum install yum-utils
debuginfo-install glibc
if the warning's still Read More →