Tested a boot with running setuid binaries.
```
# su - bryan
You can make a log of your terminal session with script(1).
## setuid script but not interp
$ cat test.sh
#! /bin/sh
id
$ ls -al test.sh
-rwsr-xr-x 1 root bryan 22 May 26 10:03 test.sh*
$ ./test.sh
uid=1001(bryan) gid=1001(bryan) groups=1001(bryan)
## setuid interp
$ cat test2.sh
#! /home/bryan/sh
id
$ ls -al test2.sh
-rwxr-xr-x 1 root bryan 22 May 26 17:04 test2.sh
$ ./test2.sh
uid=1001(bryan) gid=1001(bryan) euid=0(root) groups=1001(bryan)
## non-setuid binary
$ /bin/sh -c id
uid=1001(bryan) gid=1001(bryan) groups=1001(bryan)
## setuid binary
$ ls -al sh
-r-sr-xr-x 1 root bryan 151400 May 26 17:02 sh
$ ./sh -c id
uid=1001(bryan) gid=1001(bryan) euid=0(root) groups=1001(bryan)
```