August 23, 2010
by Mohan Cheema
2 Comments
As SVN admin we are asked to send an email to release managers and testers for all the commits made to the repository so that release managers can update their release sheet and testers can do the testing. This is small post-commit hook for SVN which sends out an email to release manager and testers.
August 23, 2010
by Mohan Cheema
1 Comment
As SVN admin we need to make sure any commits made to the repository should have comments associated it with. The reason to have comments during commits is simple to know what has been fixed or what new has been added to the repository. Here is the simple shell script I have written to stop the commits if comments has not been added.
August 18, 2010
by Mohan Cheema
0 comments
Linux has a supposedly good memory management feature that will use up any “extra” RAM you have to cache stuff. This section of the memory being used is supposed to be freely available to be taken over by any other process that actually needs it, but unfortunately some Linux distros think that cache memory is too important to move over for anything else that actually needs it.
August 13, 2010
by Mohan Cheema
0 comments
It often happens when we install vsftpd on newly installed system and configure it properly still sometimes we get one of the following error.
August 12, 2010
by Mohan Cheema
0 comments
Everyone probably know about memcached (http://memcached.org/) and its high performance name-value based memory object cache interface. Its main purpose is to provide an easy to use distributed caching engine in a multinode environment. However, have you ever wanted to let memcached handle replication?
July 27, 2010
by Mohan Cheema
2 Comments
I was configuring Apache Tomcat on 64-Bit Linux OS and wanted to tune it for better performance. While searching the net for the same I came across JVM Performance Tuning by Andrig Miller its good start for tuning Java for better performance on machine with Large memory.
May 24, 2010
by Mohan Cheema
3 Comments
Different platforms and devices require SSL certificates to be converted to different formats. For example, a Windows server exports and imports .pfx files while an Apache server uses individual PEM (.crt, .cer) files.
May 21, 2010
by Mohan Cheema
0 comments
Renaming file name.old to name.new – To test things first, insert ‘echo’ between ‘do mv’ (below).
$ for i in *.input; do mv $i ${i/name\.old/name\.new}; done
Running application in loops on many input files
$ for i in *.input; do ./application $i; done
May 21, 2010
by Mohan Cheema
0 comments
Simple AWK programs enclosed in single quotes can be typed and executed right at the Unix prompt. For example, the program
awk ‘BEGIN { FS = “:” } { print $1 | “sort” }’ /etc/passwd
This program prints a sorted list of the login names of all users.
April 28, 2010
by Mohan Cheema
4 Comments
Introduction
In many cases using MRTG in a basic configuration to monitor the volume of network traffic to your server isn’t enough. You may also want to see graphs of CPU, disk, and memory usage. This chapter explains how to find the values you want to monitor in the SNMP MIB files and then how to use this information to configure MRTG.