Linux

Shutdown Linux Machine At Specific Time

Here is a useful command when you need to shutdown you machine at a specific time of the day. For example after a specific event you needed to log.

shutdown -h hh:mm

Shutdown scheduled for ons 2017-04-12 22:35:00 ICT, use 'shutdown -c' to cancel.

Remark, you can can always cancel the shutdown with "shutdown -c".

Example:

shutdown -h 22:35

Get more info with "shutdown --help".

 

Glxgears No Vertical Synchronization

Glxgears is a very simple benchmarking tool for your graphics card.

Running glxgears with no vsync (vertical synchronization) is a great simple way to do a very simple benchmark of your graphical situation when you are testing out drivers on your linux system.

You just run the command: vblank_mode=0 glxgears

Easy way to see current graphics driver in use in Xorg: egrep -i " connected|card detect|primary dev|Setting driver" /var/log/Xorg.0.log

Bootable ISO Without Burning Anything

In the old days we all had CD-drives, but most modern computers these days don't have an optical drive. This makes things even more efficient, because you need to think smart. Some people choose to have an external optical drive, but why all the hassle when you can have a bootable USB or a bootable partition on your harddrive. There ar many guides on the internet, how to get that done manually. Again, why the hasse when we have UNetbootin, the perfect software for booting your favorite ISO's from your harddrive!

Screen Capture In Linux With Audio From Microphone and System Sounds

My random notes regarding screen capture. The screen capture is not hard, and it is not hard to have one source of audio like the microphone. The hard part is to have multiple audio sources, like the microphone and the system sounds.

I use Cheese for the built in webcam capture. Here are the random links: