XceptN’s IT Blog

Since I do not need this frequently, I keep forgetting about this. (more…)

Every instance of the command line shell (thus every process) on Unix (and hence Linux) has a different set of environment variables. Actually different shell instances you may have the same variable, but set to different values.

If you are doing a system wide job and you are using shell scripting, you would like to know whether you are referring to the same or different local environment variables. The Bourne Again SHell (bash) provides a handy syntax for that. (more…)

Below are the tips I keep in mind with respect to crontab file format / configuration on Linux and Unix systems. (more…)

There are various filesystems on Linux, some being cluster aware, some being taking care of data integrity and so on. I have been using tools below to measure and compare performance of each:

• bonnie
• dbench
• postmark
• iozone

Hope that helps…

I really do not like increasing the MTU that large..Some reasons below… (more…)