Add more contents or linux-commands in linux-cheatsheet.md file

[crescentpartha]

Descriptions

add more contents or linux-commands in linux-cheatsheet.md file

Expected behavior

Enrich the linux-cheatsheet.md file by adding more frequently used Linux commands.

Screenshots or Links

If applicable, add screenshots or a modified UI link to help explain your contribution.

Additional Context

Please, directly create a pull request and @mention your pull request id here like #150

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