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From: pdb@sei.cmu.edu (Patrick Barron)
Newsgroups: comp.unix.questions
Subject: Re: file times
Message-ID: <1037@aw.sei.cmu.edu>
Date: Mon, 20-Apr-87 02:23:21 EST
Article-I.D.: aw.1037
Posted: Mon Apr 20 02:23:21 1987
Date-Received: Mon, 20-Apr-87 23:42:18 EST
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Reply-To: pdb@sei.cmu.edu.UUCP (Pat Barron)
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In article <12905@watmath.UUCP> djfiander@watmath.UUCP (David Fiander) writes:
>In that case, what is the difference between ctime and mtime?  According to
><sys/inode.h> mtime is last modification time and ctime is last inode change
>time.  When would one change, and not the other?

Changes to the contents of a file will update both ctime and mtime.  If you
do something that only changes the file's inode (like changing the permissions
of a file), then only ctime is updated.

--Pat.