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How to get columns TIME and TTY of commands ps -A?

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Operating Systems Linux Ubuntu How to get columns TIME and TTY of commands ps -A?
# 1  
Old 07-16-2012
How to get columns TIME and TTY of commands ps -A?
Hi,
Commands ps -A include four parameters are PID, TTY, TIME and CMD. I can not found pathnames of TTY and TIME which I can read from file in C language to get information display on screen. Thank you!

Ex:
PID TTY TIME CMD
1 ? 00:00:01 init
# 2  
Old 07-16-2012
Do you mean the /proc directories? /proc/pid, from your example /proc/1
is the path.

However TIME comes from /var/adm/utmpx - you will have to use a structure defined in utmpx.h to read the file.

example code here:
loginacct/utmpx_login.c (from "The Linux Programming Interface")

As to the TTY, what are you trying to do?

/proc/pid/fd/0 is the tty for the process, if one exists. A ? in ps -A output means the process does not have a controlling terminal.
# 3  
Old 07-18-2012
Thank you, but I see /proc/pid/fd/0 a socket, I cannot read it by C language cause I need read "TTY" to display the screen.
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