The 1.echo output character, or the value of the output variable. 2.date%y: Year;%m: month;%d: day;%H: Hour, 24-hour system,%I: Hour, 12-hour system,%m: minutes,%s: seconds,%F: year-month-day,%T: hour-minute-second;-S: set date and time; 3.reboot Restart computer. 4.poweroff shut down the machine. 5.wget-b: Background download mode;-P: Download to the specified directory;-T: Maximum number of attempts-C: breakpoint continuation;-P: Download all resources in the page, including pictures, videos, etc.-r: Recursive download. 6.ps-a: Displays all processes, including the current user and other users;-u: User and other details;-X: Displays processes that do not control the terminal, and 7.top dynamically monitors information such as process activity and system load. 8.PIDOF queries the PID value of a specified service process. 9.kill terminates a service process for a specified PID. 10.killall terminates all processes for a service with a specified name.
10 Common Linux System commands
