[Linux] kill -15 (is better than -9)

Sometimes we have to kill process on linux server.

Usually we use kill -9 [pid].

However, this command can cause some problems.
When we terminate process forcibly, the job or data can be damaged.

So I recommand kill -15 [pid], instead of kill -9 [pid].

kill -15 [PID]
It kills process after terminating job in order, safely.