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.

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solang – Photo collection viewer.

Image via Wikipedia

Name       : solang
Arch       : i686
Size       : 1.8 M
Summary    : A Photo Manager for GNOME
URL        :
License    : GPLv3+
Description: Solang is a 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 \”Cloud\”. 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 softwares and provide a fast
: and reliable alternative that does not place humongous demands on
: user\’s hardware resources even to meet basic functionality.