nproc Command in Linux with Examples
Last Updated :
06 Oct, 2024
nproc It is a simple Unix command which is used to print the number of processing units available in the system or to the current process. This command could be used in system diagnostics and related purposes. It is part of GNU Core utils, so it comes pre-installed with all modern Linux operating systems.
Syntax
nproc [Arguments] ...
Working with nproc Command
Here are some practical examples of how to use the nproc command effectively:
1. Use nproc command
Simply running the nproc command without any arguments will display the number of processing units available to the current process
nproc
It prints the number of processing units available to the current process. It may be less than the number of online processors.
2. Print total installed processing units
We use the "--all" option when we want nproc to display the total installed processing units.
nproc --all
3. To exclude some processing units
We use "--ignore" option when we want nproc to exclude a set number of processing units.
nproc --ignore=4
4. Get the help section
This command will display the help section of the nproc command which will have all the information related to the nproc command.
nproc --help
5. Get the Display version
This command will display the version of nproc command in Linux.
nproc --version
6. Get the nproc manual
This command will print the manual of the nproc command.
man nproc
Conclusion
The nproc command remains as one of the useful tools for the Linux system administrator reviewing that will help them in monitoring the number of CPU resources in a system without a lot of complications. As such, the overall performance of the system can be improved since users are able to differentiate quickly the number of these processing units available easily.
nproc is used in shell scripts to configure systems automatically, together with other commands such as make for parallel compilation, or when used on its own for system analysis purposes, it will give accurate information about the availability of the CPU. --all and --ignore options make it comfortable to set how the processing units should be calculated and described based on the needs of a particular task.
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