unix - processes 进程

Unix run processes in parallel is called multitasking.

# (1) check the running processes
ps

# give you more
ps -T

# (2) understanding the ps output
PID - process ID
TTY - terminal name
STAT - (S) sleep
            (O) running
            (R) wait to run on the processor
            (I) just be started
            (T) paused
            (Z) that is ending
TIME - amount of computing time the process has used
CMD - command used by the process

# (3) killing process
you need to know the process ID of which you would like to kill

kill PID