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> Chmos +s --help, what does the s flag do?
post Oct 7 2003, 09:04 AM
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What does the s flag at the end of chmod do? The man page dose not seem to talk about it.
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post Oct 7 2003, 11:13 AM
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The +s sets the "sticky bit" on a file. You can find this in the manpage under "sticky file" and "sticky directories".

I want mplayer to run with root permissions so that it can access the real-time clock (/dev/rtc), so I set the sticky bit on the mplayer binary so it can run with root permissions:

chmod +s /usr/bin/mplayer

This is somewhat of a security risk, so most people (systems administrators) usually keep a tight check on what files are sticky (or SetUID) for security purposes.

Corey Quilliam
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