check hard disk rpm or rotation speed

Lot of times you want to check the disk rpm, especially on the servers to check if it is 7.2K or 10K or 15K rpm disk. How do you do this from linux terminal. Here it is :

sginfo -g /dev/<device>

Note that sginfo comes from sg3-utils.

pigz -parallel gzip

Here is a short description of pigz:

pigz, which stands for parallel implementation of gzip,
is a fully functional replacement for gzip that exploits
multiple processors and multiple cores to the hilt when compressing data.

And for the installation:

sudo yum install pigz

With pigz, if you don’t have many things running on your multi processor machine then you will see a significant improvement when you are gzipping the files.

solang – Photo collection viewer.

Name       : solang

Arch       : i686

Size       : 1.8 M

Summary    : A Photo Manager for <a class="zem_slink freebase/en/gnome" title="GNOME" rel="homepage" href="http://www.gnome.org/">GNOME

URL        : https://savannah.nongnu.org/projects/solang/

License    : <a class="zem_slink freebase/en/gnu_general_public_license" title="GNU General Public License" rel="wikipedia" href="http://en.wikipedia.org/wiki/GNU_General_Public_License">GPLv3+

Description: Solang is a <a class="zem_slink freebase/en/free_content" title="Free content" rel="wikipedia" href="http://en.wikipedia.org/wiki/Free_content">free photo manager that will act as a front-end for

directory based local storage as well as remote photo-storage

systems, as can be said, on the &#8221;Cloud&#8221;. Basic editing support is

also planned as well as a small pipelaine for RAW processing.

The aim of this project is to break the performance charecteristics

of current popular photo management <a class="zem_slink freebase/en/computer_software" title="Computer software" rel="wikipedia" href="http://en.wikipedia.org/wiki/Computer_software">softwares and provide a fast

and reliable alternative that does not place humongous demands on

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