27 Apr
2018
27 Apr
'18
10:58 p.m.
On 2018-04-28 02:26, Dave Horsfall wrote:
On my FreeBSD server:
% ls -l /bin/ps
-r-xr-xr-x 1 root wheel 35640 Oct 15 2017 /bin/ps
On my crappy MacBook:
% ls -l /bin/ps
-rwsr-xr-x 1 root wheel 51200 Jul 15 2017 /bin/ps
Clearly this will depend on how ps is implemented, which is one of the
messier aspects of our favorite OS. If it does its thing just by
reading a pseudo-file or a pseudo-device, then setgid will be enough,
but maybe it needs to execute a root-only system call.
There is a longish thread on comp.unix.programmer right now about this
very topic.
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