Have you ever been in the middle of a Linux project, typing a command, and suddenly your brain just clicks?

When you open a Linux distribution and are looking for a file, what is the command?

Is it the remote server, facing the black and white screen, but can’t type anything?

That’s right, in order to repeat similar situations in the future, I specially sorted out the Linux system most commonly used commands!


  • File search


  • Check the file


  • Files and Directories


  • File permissions


  • The file system


  • Users and Groups


  • System information


  • Packaging and compression


  • APT Software Tools


  • Disk space


  • network


  • To turn it off


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