[[Mathias Chauvin]] - IT stuff

Here is a little quick and dirty script which allows to choose the OS that will be booted from the command line.
The script has been written to work with RedHat Linux (Some updates will be required to match the use of GRUB2.

The idea of this script is simply to create a grub.conf file from grub.conf files found on the different disks on the server (Ooops, I’ve forgotten to say this: One and only one OS is installed per disk - for now ) and set the default entry to the one chosen by the user.

Find the script here: rem_reboot.pl
Testing the user id has been added to exit the script before actually running it if not run as root

Configuring a shared printer with CUPS is something quite easy. Nevertheless, it appears that I haven’t been able to print from a Mac OS X client (I haven’t tried from any other client OS).
Trying to print a document from the client has lead to the following type of error message:

E [29/Oct/2009:22:35:23 +0100] Request from "client ip address" using invalid Host: field "servername.domain"

To fix this, add the following to the /etc/cups/cupsd.conf file:

ServerAlias *

and restart CUPS:

root@servername~# /etc/init.d/cups restart

Enjoy

Networker client for Linux only comes “rpm packaged".
Here are a few stepsIn order to install Networker Client on Debian or Ubuntu linux servers:

1. Install alien package converter

   root@deb:~# apt-get install alien

2. Convert the networker client package from rpm to deb

   root@deb:~# alien lgtoclnt-7.5.1-1.x86_64.rpm

3. Install the deb package

   root@deb:~# dpkg -i lgtoclnt_7.5.1-2_amd64.deb

4. Start the networker client. this will create the /nsr directory. Then kill the networker client daemon:

   root@deb:~# nsrexecd
   root@deb:~# kill `pidof nsrexecd`

5. Create the /nsr/res/servers

   root@deb:~# cat /nsr/res/servers
   your_networker_server.yourdomain.com

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and protect it with a password…

I won’t deal here with hard drive or file system encryption, and you can do a little googling to know more about this

So let’s secure a single file using OpenSSL and the AES-256. Because the script is explicit enough take a look after the break:

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