Linux status (Linux process state Codes)

Process status Code and Description:

State code	Description
D	Non-disruptive sleep. is usually in I/O.
R	Run-in/can run. is in the running queue.
S	Sleep can be interrupted. Wait for an event to occur.
T	Has stopped. This may be because the shell job control or process is being debugged.
W	The page is paged. Not available for kernel 2.6.xx and later versions.
X	Death. Will never appear again.
Z	Dead/Zombie process.
<	High-priority tasks.
N	Low-priority tasks.
L	Paging memory is locked into memory. Used for real-time tasks and custom I/O.
S	Session first process.
L	is a multithreaded process. Cloning threads like Pthreads.
+	In the foreground process group.

English Original:

PROCESS State CODES Here is the different values that the S, stat and state output specifiers (header "Stat" or "s") would Display to describe the state of a process: D uninterruptible sleep (usually IO) R Running or runnable (on run queue) S interruptible Sleep (waiting for a event to complete) T stopped, either by a job control signal or because it's being traced W Paging (not valid since the 2.6.xx kernel) X dead (should never be seen) Z Defunct ("zombie") process, terminated but not reaped by its parent for BSD formats and when the STAT keyword are used, additional characters may be displayed: < High-priority (not nice-to-other users) N low-priority (Nice-to-other users) L have pages locked to memory (for real-time and custom IO) S is a session leader L was multi-threaded (using Clone_thread, like NPTL pthreads do) + is in the foreground process group

Reference:
1. Online Manual: Http://man7.org/linux/man-pages/man1/ps.1.html

Linux status (Linux process state Codes)