Please run in Linux!!
Regular Linux command is the same as the command in Linux system (ls, mkdir, who, etc.)
Special command
exit: quit OS shell
history: show the historical commands that have been executed before
go: change the directory
pid: show the pid of the recent 5 child process
Redirection
Standard input is redirected using < ARG
Standard output is redirected by using > ARG
Pipe
COMMAND1 | COMMAND2 connects the output of COMMAND1 to the input of COMMAND2
Jobs
Press Ctrl + C to kill the current child process
Press Ctrl + Z to suspend the current running process
continue: continue a suspended process
jobs: list all the jobs
status: print the status of the last command executed