A command-line utility “lscpu” in Linux is used to get CPU information of the system. The “lscpu” command fetches the CPU architecture information from the “sysfs” and /proc/cpuinfo files and displays it in a terminal.
The syntax of the “lscpu” command is mentioned below:
How to use the “lscpu” command in Linux:
Execute the “lscpu” command without invoking any argument in the terminal to display the complete picture of useful information about the processor:
lscpu Command Options:
The list of several options providing by the “lscpu” command tool is listed below:
To display in Human Readable Format:
In the “lscpu” command, there is an option to display output that is understandable for the user.
Run the “-e” option in the terminal; it will gather CPU related data and display it in Human Readable Format:
Also, if you want to limit the output with the particular column, then use the “-e” option with the column name:
Display in Parsing-friendly Format:
To display the processor information in a parsing-friendly format, use the “-p” option:
Hexadecimal Masks for CPU Sets:
When we execute the “lscpu” command, it displays output in list format by default, but you can use the hexadecimal mask to print CPU sets using the “-x” option:
Display in JSON Format:
The “lscpu” command also allows to print the extended output of CPU information in JSON format through the “-J” option:
Offline and Online CPU list:
The output can also be limited with the summary of the online and offline CPU list by using the “-e” and “-p” options:
- The “-b” flag for the list of online CPUs.
- The “-c” flag for the list of offline CPUs.
These flags will run only with the execution of “-e” and “-p” options.
Such as, if you want to print the results only for online CPUs, run the given command in a terminal:
To print a help message regarding the “lscpu” command and its options, use the “-h” option:
Run the “-V” option in a terminal to print version of the “lscpu” command tool:
The “lscpu” command is a Linux tool used to fetch CPU-related information from the sysfs files and display the output in the terminal.
This guide has discussed the “lscpu” command tool and its usage with multiple functions.