[ Thanks to Mike
Golvach for this link. ]
“All of the previous issues with “who -T” have been
worked out. Basically, this means that I’ve gone over it every
which way and could find no good reason to use it, as opposed to
“w.” Of course, in our particular case, we are looking,
specifically, for a single process’s idle time (as opposed to a
user process’s idle time; reported by “who -T”). And, although it’s
a little bit of a pain (initially), short of programming in C
(accessing the pstatus struct on Solaris, to be exact – the name
and location may vary from distro to distro of proprietary, or
free, Unix and/or Linux), linking the pty information from ps with
the “idle time” information from w, seems to be the best way to get
this information. So far, it’s the most efficient way I could find
using simple bash scripting.”