How do suid permissions work?

UNIX for Advanced & Expert Users
1

Hello all,

I have a file system with permissions:

drwxrwsr-x   49 pwcenter pwce1          4096 01 May 17:00 InFiles

Can someone explain the real significance of the 's' setting for group users please?

Cheers

2

IT means that when anybody who is allowed to run the file, regardless of their current group, assumes the group id of the file - in other words you get the pwce1 group instead of your current group.

1 Like
3

Please see my explanation in this thread, especially the 3rd post in the thread.

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4

SUID bit doesn't work on scripts. I see most of the people set SUID bit on scripts.
SUID has some pros and cons, to know that check bellow link.
I hope it clears all your doubts.

UNIX/Linux Bash Shell Scripting: UNIX/Linux Advanced File Permissions - SUID,SGID and Sticky Bit