[TUHS] rm command

[Ian Zimmerman]

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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