Date: Sun, 15 Aug 2004 11:20:15 +0930 From: "Paul A. Hoadley" <paulh@logicsquad.net> To: freebsd-questions@freebsd.org Subject: Re: find -exec surprisingly slow Message-ID: <20040815015015.GE25751@grover.logicsquad.net> In-Reply-To: <p06110400bd4454ff72b3@[128.113.24.47]> References: <20040814230143.GB8610@grover.logicsquad.net> <p06110400bd4454ff72b3@[128.113.24.47]>
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On Sat, Aug 14, 2004 at 08:11:54PM -0400, Garance A Drosihn wrote:
> Where is '.' in the above `find .' command? Is it is on the same
> partition as /home/paulh/tmp/spam/sne/ ?
>=20
> You may find it much faster to do something like:
> mkdir usermail.new
> chown user:group usermail.new
> mv usermail usermail.bigspam
> mv usermail.new usermail
> cd usermail.bigspam
> find . \! -atime +1 -exec mv {} ../usermail \;
>=20
> My assumption there is that you have a LOT fewer "good files" than
> you have "bad files", so there will be fewer files to move. But I
> am also making the assumption that all your files are in a single
> directory (and not a tree of directories), which may be a bad
> assumption.
All assumptions correct, and that is what I should have done.
> The thing to use is the '-J' option of xargs. That way you can have
> the destination-directory be the last argument in the command that
> gets executed, and yet you're still moving as many files in a single
> `mv' command as possible. E.g., change my earlier `find' command
> to:
> find . \! -atime +1 -print0 | xargs -0J[] mv [] ../usermail
>=20
> Check the man page for xargs for a description of -J
Will do. Thanks for the tip.
--=20
Paul.
w http://logicsquad.net/
h http://paul.hoadley.name/
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