Linux Security: How to hide processes from other users

 Guides, Pills  No Responses »
Mar 272014
 

Small and at the same time great article from Steve on http://www.debian-administration.org/.

—

If you run a multi-user system it can increase security if you hide the display of running processes, and their arguments, which belong to other users. This helps avoid problems if users enter passwords on the command-line, and similar.

Continue reading »

Flattr this!

How to measure memory usage in Linux

 Articles, Guides  No Responses »
Mar 032014
 

Article by me, first published on Openlogic.com

Whether you are a system administrator or a developer, sometimes you need to consider the use of memory in GNU/Linux processes and programs. Memory is a critical resource, and limited memory plus processes that use a lot of RAM can cause a situation where the kernel goes out of memory (OOM). In this state Linux activates an OOM killer kernel process that attempts to recover the system by terminating one or more low-priority processes. Which processes the system kills is unpredictable, so though the OOM killer may keep the server from going down, it can cause problems in the delivery of services that should stay running.

In this article we’ll look at three utilities that report information about the memory used on a GNU/Linux system. Each has strengths and weaknesses, with accuracy being their Achilles’ heel. I’ll use CentOS 6.4 as my demo system, but these programs are available on any Linux distribution.

Continue reading »

Flattr this!

My top 10 open source software

 Articles, Opinion  3 Responses »
Jan 212014
 

I received this article from Saska Dasgupta and gladly publish it.

I discovered the Linux and open source world around 4 years ago, and from that date I’m trying to know more open source software or projects.

I must say that they changed my life both as I started to use different software but the most important thing, in my opinion, is that I’ve discovered a different way to think to software and collaboration, or should I say understand what really means Free software ?

There are different open source software and projects, that I use in my work or at home and that in some way changed (in better) my life:

List of my top 10 open source software

  1. Miro Video Converter:If you want to switch over videos of any format to different formats, then this open source known as Miro Video Converter will be very useful for you. Miro is absolutely free and it is an open source video player and open source TV player where you can access the maximum number of HD content as compared to any other video player. It is also suitable for the Android devices or the iOS.I like this software as it’s really simple to use and allow me to change format of the video to see them on my mobile devices or my TV.
  2. Continue reading »

Flattr this!

Glances a new system-monitor tool

Glances a new system-monitor tool

Most of this post is based on the information found in the blog of Nicolargo, the author of this tool. Glances is a free software (licensed under LGPL) to monitor your GNU/Linux or BSD operating system from a text interface. Glances uses the library libstatgrab to retrieve information from your system and it is developed […]

Full Story