=== setuid perms (apache-usable) ===
-rws--x--x. 1 root root 42288 Aug 22  2010 /usr/sbin/userhelper
-rws--x--x. 1 root root 20184 Jan 26  2018 /usr/bin/chfn
-rws--x--x. 1 root root 20056 Jan 26  2018 /usr/bin/chsh
-rwsr-xr-x. 1 root root 22544 Feb 26  2019 /usr/bin/pkexec
-rwsr-xr-x. 1 root root 40240 May 10  2016 /usr/bin/newgrp
-rwsr-xr-x. 1 root root 34904 Jun 19  2018 /bin/su
-rwsr-xr-x. 1 root root 30768 Nov 23  2015 /usr/bin/passwd
-rwsr-xr-x. 1 root root 51784 Aug 23  2016 /usr/bin/crontab
-rwsr-xr-x. 1 root root 54464 Mar 21  2017 /usr/bin/at
---s--x---. 1 root stapusr 183072 Jun 19  2018 /usr/bin/staprun
=== test exec ===
Usage: chfn [ -f full-name ] [ -o office ] [ -p office-phone ]
	[ -h home-phone ] [ --help ] [ --version ]
---
Usage: chsh [ -s shell ] [ --list-shells ] [ --help ] [ --version ]
       [ username ]
---
/usr/sbin/userhelper: invalid option -- '-'
---
pkexec --version |
       --help |
---
Usage: newgrp [-] [group]
---
/usr/bin/crontab: invalid option -- '-'
/usr/bin/crontab: usage error: unrecognized option
---
/usr/bin/at: invalid option -- '-'
Usage: at [-V] [-q x] [-f file] [-mMlbv] timespec ...
---