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What do different color of the files mean in Linux

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When you list using 'ls' command in Linux terminal, you may see different color for different files. Each color represent a differ...

Intel MKL Libraries (Some Notes)

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Most of the clusters architectures are Intel based. The Intel compiler (Ifort) is present in such machines. The Intel MKL library, which ...

To run jobs in specific node in a HPC cluster

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Some time, you may want to run a job in a specific folder. For example, to check if all the nodes are working properly after restarting the...

How to find the number of nodes and name of those nodes in a HPC cluster

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To display the nodes, use cat $PBS_NODEFILE This will display all the details about the cpu and node.  Or use  cat /etc/hosts ...

Important things to before you work on High Performance Computing (HPC) cluster: For Beginners

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Why HPC is important and where it is used? For login, use ssh login and use bitvise ssh client from windows See the default shell, echo...

Check the size of the directory and file (and see the largest in terms of memory)

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The command du can be used to check the space (disk usage) To see the disk space du -sh *   To see the disk space and sort it du ...

Linux tips: Run new command with previous arguments

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Tip 2: type history. All of your recent commands would be listed. 12 ls 13 sudo make && make install 14 cd ~/myapps/ H...

Extract only the number from a file name

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Some times you may want to extract only the number from a file name, especially when you are working with a huge number of files to do some...

Check compiler versions

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For any compiler or application, to check the version, just use '''-V" to check the version. ifort -V

Linux Tips - Reverse search (ctrl +R)

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To reverse search the history of commands you used, you can use Ctrl+R and then type any part of the command. For example, configure ...