Category Archives: Unix and Unix Internals

Only topcis related to Unix internals should be discussed here

Sticky bit

Sticky bit on files Sticky bit can be set on files for faster loading of program which in turn reduces the delay in execution of the binary. When a process executes a file that has its sticky bit set, the … Continue reading

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All about Network File System (NFS)

As the name itself indicates it’s a file system on remote computer which can be accessed as a local filesystem on other computers in network. Sharing file system in a network is a 3 step process 1. Start NFS service … Continue reading

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Unix command guide on different operating system

If you know the command in one unix operating system and looking for similar command in another unix operating system, have a look at guide available at http://www.unixguide.net/unixguide.shtml .

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Logical and physical volume

In simple words, LVM is nothing but logical management of disks on system. System administrators might be more interested in this topic rather than application developers but it’s always good to know little bit of system administration too. Why do … Continue reading

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/proc file system

The /proc file system proc file system isn’t associated with a hardware device such as a disk drive. Instead, /proc is a window into the running Linux kernel. Files in the /proc file system don’t correspond to actual files on … Continue reading

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top command displays CPU utilization > 100% for a process

Does the topic sound absurd ? I have observed “top” command displaying CPU utilization of more than 100% for a process. I was wondering how a process can occupy more than 100% of CPU time. Answer lies in, how many … Continue reading

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