If the mail command is missing in CentOS you just need to install the mailx package. You can do this with the following yum command:
yum install mailx
If the mail command is missing in CentOS you just need to install the mailx package. You can do this with the following yum command:
yum install mailx
Extract the audio from a flash video.
ffmpeg -i video.flv -acodec copy track.mp3
This is a neat little program which with give you a “graphical” display of the free space from the command line. http://www.cyberciti.biz/tips/unix-linux-bsd-pydf-command-in-colours.html
I came across an interesting article the other day about the sys-unconfig command. If you run the command it will wipe out all of your OS settings and re-runs the original setup after it reboots.
sys-unconfig
I had written a script similar to this one to handle my Virtual-box systems but they have it all put together nicely.
How to configure VirtualBox to Auto start and stop Guest VM | CentOS | Linux Tutorial.