Seven. Linux system-related commands

shutdown [options] [TIME] & (not blocked in the background)

-C cancels the previous shutdown command

-H shutdown

-R Restart

The time section can be specified as now to perform an immediate restart

Reboot restart

Logout Sign Out

chmod 751 filename gives a file permission (751 for read-write executable)

W view logged in user and load

Last view user's login log (/var/log/wtmp)

Lastlog View last logon time for all users

History View Historical Command and Operation History Command, save 1000 By default (~.bash_history)

Cat/etc/inittab = Runlevle View current system level (0 for shutdown, 6 for restart)

Shortcut keys:

CTRL + C forces the current command to stop

CTRL + L Clear Screen

CTRL + a cursor to the beginning of the command

CTRL + E cursor to the end of the command line

CTRL + Z put commands into the background

CTRL + R search in the history command

Ctrl + V Delete Current line input

Seven. Linux system-related commands