Linux Blog

Bluetooth -- Leave it - it's locked, come back - it's back too...

BlueProximity is software helps you add a little more security to your desktop. It does so by detecting one of your bluetooth devices, most likely your mobile phone, and keeping track of its distance. If you move away from your computer and the distance is above a certain level (no measurement in meters is possible) for a given time, it automatically locks your desktop (or starts any other shell command you want).

Once away your computer awaits its master back - if you are nearer than a given level for a set time your computer unlocks magically without any interaction (or starts any other shell command you want).

A simple KDE network monitor - KNetStats

A simple KDE network monitor that show rx/tx LEDs or numeric information about the transfer rate of any network interface in a system tray icon. KNetStats is now part of kde-extragear package so the source code can be found at the KDE subversion repository. Stable releases packages are avaliable to download also at SourceForge download servers. The current version is v1.6.1.

Features:

* See network activity, transfer rate, speed chart, IP address, MAC address, etc of any network interface (including localloopback).
* Support multiple network interfaces.
* See simple statistics (packets and bytes received and transmitted).
* Configurable Update Interval, View mode, Icon themes, etc.
* GPL'ed, you can use and modify for free (Following GPL conditions)
* Carrier on/off detection.

How To Upgrade Your Desktop From Ubuntu 7.10 (Gutsy Gibbon) To 8.04 LTS (Hardy Heron)

This guide shows how you can upgrade your desktop from Ubuntu 7.10 (Gutsy Gibbon) to Ubuntu 8.04 LTS (Hardy Heron).

Want read full content here the link at HowToForge.com

How to run a crontab entry as "nobody"

Here's a quick example of how to run a program on a Linux system through a crontab entry, with the program being executed as the user nobody.

Just put this entry in a crontab file (by issuing the "crontab -e" command, for example), and the program named myProgram.sh will be run at 1:30 a.m. using the Bourne shell, and will be run as the user nobody.

30 1 * * * su -c '/path/to/program/myProgram.sh' -s /bin/sh nobody

Of course testing is always recommended, but this has worked for me.

How to run a Unix/Linux job in the background when you log off (nohup)

So you want to log off and go home for the night, but you need to run a job that's going to take a couple of hours? Fear not, the nohup command will help you out.

As a simple example, assume that you have a command named RunningJob.sh that you want to run, but you know if will take over three hours to run. Just submit the job using the nohup ("no hang up") command as shown below, and you should be good to go:

nohup myLongRunningJob.sh &

Of course make sure you test your program to know that it is really set up properly, otherwise you'll be in for a disappointment in the morning. Other than that, if your command is set up properly, the nohup command should do the trick for you. You can safely log out, and find your results waiting for you in the morning.