Archive for June, 2011

19 Jun
2011

Viewing a V4L2 webcam with mplayer

The great mplayer can be used to view movies, play dvd's, and even to watch the webcam. For my Logitech QuickCam Pro 4000, I use the following command: mplayer -cache 128 -tv driver=v4l2:width=640:height=480:outfmt=i420 -vc rawi420 -vo xv tv:// If you have multiple v4l2 devices, you can choose which

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IT | 1 Comment » | Tags: , , ,

17 Jun
2011

Review: Belkin KVM Omniview 5216K – part 2

After my Belkin 5126K broke down, I tried to get Belkin to fix it. I'm not very pleased with the results so far.

Try #1

Last tuesday, I filled in a RMA form to get my Belkin Omniview 5216K repaired or replaced. It doesn't boot at all, but

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IT | No Comments » | Tags: , , , , ,

17 Jun
2011

SELinux: Running samba unconfined

I don't want to disable SELinux, but i'm using samba to access about every file on the system. To run samba unconfined, change its context: chcon -t unconfined_exec_t /usr/sbin/smbd service smb restart This works for other software as well. Update: Another solution may be to run software in permissive mode.

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IT | No Comments » | Tags: , , ,

16 Jun
2011

Minimize Google Talk at startup

Google Talk has a function to automatically start on boot. However, it cannot minimalize automatically. To run Google Talk minimized by default, you'll need to use some external software.

CMDOW

I'm using a tool named cmdow to do the hiding for me. Cmdow is an extremely useful tool

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IT, Windows | No Comments » | Tags: ,

15 Jun
2011

Fedora 15: Nagios errors

Installation of Nagios on Fedora 15 is easy as yum install nagios nagios-plugins* php nrpe. I only found one problem: Error: Could not read object configuration data! The webserver runs as user apache, which cannot access /etc/nagios/objects by default. Chmod or chown the directory to fix it, or add user

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IT, Linux | 4 Comments » | Tags: ,

15 Jun
2011

OpenVPN: script failed: could not execute external program

I've been using the great VPN software OpenVPN for a long time now. I just love it. Today, I copied the configuration of my old router to my brand new Fedora 15 box, and suddenly it can't start anymore. In the logs I found this message: script failed:

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IT | 1 Comment » | Tags: , ,

11 Jun
2011

Updating the Dell PERC H200 firmware

My brand new Dell R300 servers contain a PERC H200 SAS/SATA controller that has pretty bad firmware. Luckily, Dell released better firmware, but you'll need to update it yourself.
  • Install and boot RedHat 5.6 or CentOS 5.6
  • Download the file RAID_FRMW_LX_R294620.BIN from the Dell support site
  • run

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IT | No Comments » | Tags: , , , ,

11 Jun
2011

Review: Belkin KVM Omniview 5216K

A few months ago I got myself quite an expensive new device: a Belkin Omniview 5216K, model no F1DP216G. With this device, I'm supposed to be able to access the KVM of up to 16 servers. I can install them servers remotely (over PXE or virtual

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Hardware, IT | No Comments » | Tags: , , , , ,

5 Jun
2011

Printing from a CUPS server to Windows 7

A colleague of mine has some family issues that require him to be home more often. However, work continues. So he started working at home with a laptop. Nothing special about that. What is special, is that we're running a piece of software ("RR") that has old-style telnet-like terminals, which

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IT | No Comments » | Tags: , , , , , ,

5 Jun
2011

WordPress: custom links on plugin page

Since WordPress 2.8, you can easily add your own links to the plugin page. This can be useful to jump right to the settings of the plugin. Example code: 
<span style="color: #000000; font-weight: bold;">function</span> set_plugin_meta<span style="color: #009900;">&#40;</span><span style="color: #000088;">$plugin_meta</span><span style="color: #339933;">,</span> <span style="color: #000088;">$plugin_file</span><span style="color: #339933;">,</span> <span style="color: #000088;">$plugin_data</span><span style="color: #339933;">,</span> <span style="color: #000088;">$status</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span>

<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span>plugin_basename<span style="color: #009900;">&#40;</span><span style="color: #009900; font-weight: bold;">__FILE__</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">!=</span><span style="color: #000088;">$plugin_file</span><span style="color: #009900;">&#41;</span> <span

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IT, Linux | No Comments » | Tags: , ,

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