Linux PS command to use the detailed

the Linux PS command lists the processes that are running at the current time. through the PS command we can know the status of the process, memory footprint, start time, and so on.
ps Command section options:
PS Command output column field Description:

Field	Description
%cpu	How many CPUs are being used by a process
%mem	How much memory is being used by the process
ADDR	Memory address of the process
C or CP	CPU Usage and scheduling information
command*	Process name, including parameters (if any)
NI	Nice value
F	Sign
Pid	Process ID
PPID	Parent Process ID
Pri	Process priority
Rss	Real Memory usage
S or STAT	Process status Code process State is represented by characters, such as R (running is running or ready to run), S (sleeping Sleep), I (Idle idle), Z (Zombie), D (non-disruptive sleep, usually I/O), P (wait for swap page), W (swap out, Indicates that the current page is not in memory), N (Low priority Task) T (terminate terminated), W has no resident pages
START or Stime	Process Start time
VSZ	Virtual Memory usage
Time	Total CPU Usage
tt or TTY	Process-related terminals
UID or user	User name of the process owner
Wchan	The memory address of the event that the process waits for, the kernel function name that the process is sleeping on, and the name of the function is obtained from the/root/system.map file.

(1) List all running processes
Ps-ef
Ps-aux

(2) List processes based on user or process name or grep
Ps-u MySQL
Ps-c mysqld
Ps-aux | grep MySQL

(3) Sort the process by memory and CPU
PS aux--sort=-pcpu | Head-5 #按cpu占用从大到小排序
PS aux--sort=-pmem | Head-5 #按内存占用从大到小排序

(4) Display process information in a tree structure (via--forest option)
Ps-f--forest-c Chrome