how many users?

[Kenneth Brody]

On 12/5/2013 9:23 PM, Fairlight wrote:
> On Thu, Dec 05, 2013 at 11:29:54AM -0500, Kenneth Brody thus spoke:
>>
>> But, if dclerk system's out to dreport, you'll see two entries.
>> (Actually, you'll probably see 3, including the original runmenu.)
>
> Yes, and if you're running <= 5.6, my approach is still correct, since
> system()ing off clerk and report ate another licence prior to that version.
> Most of my clients are still on <= 5.0.14.

Given that 5.0.14 was released over 9 years ago, I didn't really feel the 
need to include that as part of the discussion.  ;-)

> If you've got 5.6 or higher, your ideal solution is a perl script that
> grabs `ps -ef` (SysV -and- linux...  Linux's procps honours -ef as SysV
> flags due to the leading dash; the dash says use SysV flags, the absence of
> a dash says use BSD flags), looks up every instance of all the appropriate
> programs, and weeds out the clerks and reports which have a parent which is
> also a clerk or report.  A one-liner is out of the question in this event.

Use "ps -e -o sess,pid,comm".   (Works on SCO and Linux.  FreeBSD needs 
"sid,pid,comm".)

Use your previous "grep", send to awk to grab just the sid, sort it, and 
then pipe to uniq.

ps -e -o sess,pid,comm | grep [flags] | awk '{print $1}' | sort -n | wc -l

[...]

-- 
Kenneth Brody