[Discuss] Corralling Processes on Linux

[Kent Borg]

On 01/20/2018 04:09 PM, Chuck Anderson wrote:
> systemd has a few features which might work well for your use case:
> https://linuxaria.com/article/how-to-manage-processes-with-cgroup-on-systemd
>

To heck with systemd, it looks like control groups will do the trick!

  - create a control group, details about all the switches unclear but 
this seems to at least come close:

sudo cgcreate -t kentborg:kentborg -g cpu:foogroup   # Yes, root needs 
to do that, but it's one-off (per boot?).

  - create my processes in that group:

$ cgexec -g cpu:foogroup watch ls &
     [1] 16137
     $ cgexec -g cpu:foogroup watch ps &
     [2] 16162

  - Find them in a pseudo file:

     $ cat /sys/fs/cgroup/cpu/foogroup/tasks
     16137
     16162

  - fg and kill one, check again:

     $ cat /sys/fs/cgroup/cpu/foogroup/tasks
     16137

Cool!

Thanks,

-kb

P.S. Less important, but could be useful: Anyone know if Mac OS has 
something like this?