PS 명령어 이해가 안가는게 있습니다.(프로세스 상태)

PROCESS STATE CODES 라고 항목이 있습니다. 말씀하신 예는 모두 아래 키워드들의 조합이겠죠.

Here are the different values that the s, stat and state output
specifiers (header "STAT" or "S") will 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 an event to complete)
T Stopped, either by a job control signal or because it is 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 is used, additional
characters may be displayed:
< high-priority (not nice to other users)
N low-priority (nice to other users)
L has pages locked into memory (for real-time and custom IO)
s is a session leader
l is multi-threaded (using CLONE_THREAD, like NPTL pthreads do)
+ is in the foreground process group

저는 유닉스와는 거리가 머니 자세한 답변은 어렵지만 어쨌든 도움이 되었길 바랍니다.