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doubts in output of ps
I am reposting this mail again.
well I have a small doubt.
when i do ps -al ti shows this.
F S UID PID PPID C PRI NI ADDR SZ
WCHAN TTY TIME CMD
00 A 501 286 274 0 75 0 - 443
wait4 tty1 00:00:00 bash
00 S 501 729 601 0 69 0 - 266
nanos1 tty1 00:00:00 a.out
44 Z 501 730 729 0 69 0 - 0
do_exit tty1 00:00:00 a.out<defunc>
I have the following doubts
Actually I have forked a.out and the child returned while parent is doing
what is F, C, NI, WCHAN
also y are some of these values 0. and what is time here? and why is it
what does sz refer to? is it the size of the file? and y is it 0 incase of
child which is defunc
after the parent exited I did ps again
I saw the priority for bash being changed to something else. how is this
possible? y is it changing? arent the priorities fixed? or does teh kernel
keeps changing the priorities dynamically? Please throw some light on this.
I mean why it has to do this?
I hope I can get teh answer