Linux notes (continuous update)

1. Turn off the machine

View online users who; View network online status netstat-a; view Background executor Ps-aux

Shutdown shutdown-h Now, Init 0

Halt, Poweroff hardware shutdown

Restart reboot, init 6

2. Permissions

CHGRP [-r] User group name file or directory

Chown [-r] Account name file or directory

chmod [-r] XYZ file or directory chmod a (U, G, O) + (-, =) R (w, x) file or directory

3. Catalogue

. Represents this Layer directory

.. Represents a previous level directory

-Represents a previous working directory

~ Represents the home folder where the current user identity resides

~account represents the user's home folder (account name)

About the variable that executes the file path $path: The system follows the path setting to query the executable file named LS in the directory defined by path.

Linux notes (continuous update)