topic Re: Set uid in Operating System - HP-UX

Set uid

brian_31 — Wed, 14 Aug 2002 19:33:39 GMT

Hi Team:

I need to change the permission on a binary from
---S--S--x sproot
to s (small s). I think there is a difference between the S ans s in setuid and setgid. Can someone help here to understand the difference and also suggest the method to change the permission to may be ---s--s--x. Please help.

Thanks
Brian.

Re: Set uid

Sajid_1 — Wed, 14 Aug 2002 19:37:06 GMT

hello,

there is actually no difference in the setguid and setuid values. The difference in S and s is the 'x' value. If you have both 'x' (x in 'rwx') and 'S' is set, then when you display, it will list as - 's'. If only 'S' is set without 'x', then it will display 'S'.

HTH

Re: Set uid

S.K. Chan — Wed, 14 Aug 2002 19:46:12 GMT

The "x", executable bit determines whether "S" or "s" will be display. Take for example.
# touch fileA
# chmod 6001 fileA
==> That gives ---S--S--x
# chmod 6111 fileA
==> That gives ---s--s--x

Re: Set uid

Sajid_1 — Wed, 14 Aug 2002 19:47:41 GMT

Hi again,

For more explanation, an eg: to try:
# cd /tmp
# touch test
# ls -al test
-rw-rw-rw- ....test
# chmod 4666 test
# ls -al test
-rwSrw-rw-
# chmod 4766 test
# ls -al test
-rwsrw-rw-

Look at the difference between both 'ls' commands

hth,

Re: Set uid

Mark Greene_1 — Wed, 14 Aug 2002 19:49:04 GMT

chmod 6111 will set the permissions to --s--s--x which means that the execute and the setuid bits are both set on owner and group.

The upper case "S" is the setuid bit without execute permissions, and the lower case "s" with the setuid bit with execute permissions.

HTH
mark