Hi Job,
* Job Snijders wrote:
> Dear all,
>
> Some ps(1) implementations have an '-d' ('descendancy') option. Through
> ASCII art parent/child process relationships are grouped and displayed.
> Here is an example:
>
> $ ps ad -O ppid,user
> PID PPID USER TT STAT TIME COMMAND
> 18180 12529 job pb I+p 0:00.01 `-- -sh (sh)
> 26689 56460 job p3 Ip 0:00.01 `-- -ksh (ksh)
> 5153 26689 job p3 I+p 0:40.18 `-- mutt
> 62046 25272 job p4 Sp 0:00.25 `-- -ksh (ksh)
> 61156 62046 job p4 R+/0 0:00.00 `-- ps -ad -O ppid
> 26816 2565 job p5 Ip 0:00.01 `-- -ksh (ksh)
> 79431 26816 root p5 Ip 0:00.16 `-- /bin/ksh
> 43915 79431 _rpki-cl p5 S+pU 0:06.97 `-- rpki-client
> 70511 43915 _rpki-cl p5 I+pU 0:01.26 |-- rpki-client: parser
> (rpki-client)
> 96992 43915 _rpki-cl p5 I+pU 0:00.00 |-- rpki-client: rsync
> (rpki-client)
> 49160 43915 _rpki-cl p5 S+p 0:01.52 |-- rpki-client: http
> (rpki-client)
> 99329 43915 _rpki-cl p5 S+p 0:03.20 `-- rpki-client: rrdp
> (rpki-client)
>
> The functionality is similar to pstree(1) in the ports collection.
>
> The below changeset borrows heavily from the following two
> implementations:
>
>
> https://github.com/freebsd/freebsd-src/commit/044fce530f89a819827d351de364d208a30e9645.patch
>
> https://github.com/NetBSD/src/commit/b82f6d00d93d880d3976c4f1e88c33d88a8054ad.patch
>
> Thoughts?
As someone who is running two OpenBSD based multi-user systems I would
love to see this feature integrated. From time to time I investigate
processes/scripts from users and seeing the process tree without
additional tools like htop would really be appreciated.
Cheers
Matthias
