How to Trace System Calls and Signals in Linux

February 24th, 2008 A simple tip for newbies - how to get Java stack trace, the invaluable tool to debug java programs, in Linux: - Type the Ctrl key followed by \, in short Ctrl \. I just used it to debug a persistent problem where a server process which automatically fetches data from a third-party site was inexplicably hanging.

September 17th, 2009 For any Linux user monitoring the system's performance can be an intricate task. Most of the Linux distributions already come with loads of monitoring tools.

September 17th, 2009 Out of many Linux monitoring tools there's a one cool one that allows you to know who is logged on the system and what they are doing. It shows current time, the time for which the system had been running, number of users currently logged on.

September 18th, 2009 Do you wanna know how long the server has been running? It requires just a simple command to monitor the time for which the Linux system has been running. With a single command you can not only know about the uptime, but also the number of users that have currently logged on and the system load averages for the past 1, 5 and 15 minutes.

October 9th, 2009 CentOS Enterprise Linux 5 is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux 5 is compatible with the equivalent Red Hat version.

November 18th, 2008 Collect calls and calls to 1-800 numbers should be free, right? Unfortunately in India, there isn't a simple way to call a 1-800 number in USA or make a simple collect call for free. However there is a way and it is free.

April 6th, 2008 How to overwrite your hard disk with random characters dd if=/dev/random of=/dev/sda How to overwrite your hard disk with zero characters dd if=/dev/random of=/dev/sda Replace sda / hda with your hard disk identifier. Either of the procedure requires the system has Linux installed or accessible from Linux operating system.

April 5th, 2006 In an interesting press release IBM announced today that Olympus America Inc., a precision company that designs and delivers solutions in healthcare and consumer electronics worldwide, has increased the performance of its Web services three times by supplementing its current environment with Linux on IBM's "all-in-one" System i business computing solution. I am not surprised.

September 18th, 2009 When working in Linux system you might need to look for the memory usage in the system. Linux comes with different command to check memory usage.

February 18th, 2007 The basic idea of RAID (Redundant Arrays of Inexpensive Disks) is to combine multiple small, independent disk drives into an array of disk drives which yields performance and recoverability exceeding that of a Single Large Expensive Drive (SLED). Redundancy is also provided (unless RAID 0) which allows easy and often automatic recovery from hard disk crash.

July 30th, 2007 It has been several months that I fully migrated to Linux. The whole company has moved 100% to Linux, all servers, desktop ...

September 21st, 2009 As a part of monitoring Linux system you often need to know about the currently running processes in Linux systems. Once you know the process running on the Linux system you can kill the process that are slowing down your system.

April 29th, 2009 Many of us have Windows and Linux as dual boots on our computer. While its good to have them both to get the best of both worlds, there are some problems too.

February 9th, 2009 Don't call yourself an avid gamer if you've still not battled the Linux games. Often the dabblers ask whether they get as cool games for Linux as for Windows.

July 7th, 2006 Finally my (unmanaged dedicated) server has been deployed (under 48 hours). Now my actual work begins.