Does anbody know what the s bit does in unix permissions?

This is just a For My Knowledge question. I see permissions in our unix environment that are set to :

rwxrwsr-w

I have found that the s stands for set user.

What does that mean?

Jim
scuzz1Asked:
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ahoffmannCommented:
man chmod

the s-bit for groups on files changes the the group from the caller's group to the group assigned to the file when it is executed.

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scuzz1Author Commented:
Thanks.

A couple of us was wondering and we could not find any text on it. Nothing very definitive. I know how to set it but never knew what it actually did.

Jim
ahoffmannCommented:
keep in mind that the s.bit for directories behaves different (for obvious reason:)
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