Building a better mouse trap, or How many lines of code does it take to trap a mouse? Post: 302070681

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Top Forums Shell Programming and Scripting Building a better mouse trap, or How many lines of code does it take to trap a mouse? Post 302070681 by mph on Thursday 6th of April 2006 03:04:40 PM

04-06-2006

Registered User

Perderabo,

Quote:

Not sure that I understand. Is this one directory or a directory tree? How the the files get removed? Anyway...

This is a directory tree /ftp. Under this there are the users and their incoming and outgoing directories. Each user has their own directory for security reasons. Our customers don't want their data availible to the wrong vendors.
Files get removed by another daily cron job that finds files older than 10 days. The date can't be trusted as far as how many minutes old they are. So, find works fine for removing old the files. If they're transferred via CIFS it holds the creation date previous to the transfer. That's why I use the -cmin. It seems to work well and uses the access time of the transfer. But I think that's where some files fall through. I had to setup ntp on the server due to clock variations between the server and the clients causing problems with file times. Another reason to use the "find all files and diff them" logic.

Quote:

I would loop through all the files getting name and size (if date cannot be trusted, ignore it). Add name and size to a little database somewhere, timestamping this addition. Or if the entry is present, update size and timestamp. Then loop through database and find entries with old timestamps; process these; remove from database and directory (removal not possible? --- mark as processed in the database.)

This is simular to what (I guess) I was trying to say with the idea I was looking into. That is to say, find all the files under /ftp/*/outgoing and diff them for additions against the file list built 5 minutes ago. Using the diffed file names, the "database" would simply be a temp file containing the name and size. Grep for the file, awk the $NF for the size and compair till they're the same, sleeping for bit between checks to avoid frantic looping. When the run is finished delete the temp database. Removed files won't be an issue, since I'm only looking for added files between runs. If the file reapears, there's usually a good reason for it (corrupted IGES files, etc...) and the vendor should be re-notified.

I hope this makes sense. My fingers are too well connected to my brain.

mph

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LEARN ABOUT HPUX

uuclean

uuclean(1M)															       uuclean(1M)

NAME

       uuclean - uucp spool directory clean-up

SYNOPSIS

       [options]

DESCRIPTION

       The commands, including are targeted for removal from HP-UX; see the below.

       scans the spool directories for files with the specified prefix and deletes all those that are older than the specified number of hours.

   Options
       recognizes the following options:

	      Clean	     directory	instead  of  the  spool  directory.  If directory is not a valid spool directory, it cannot contain ``work
			     files''; i.e., files whose names start with These files have special meaning to pertaining to job statistics.

	      Scan for files with
			     pre as the file prefix.  Up to 10 arguments can be specified.  A without any pre following will cause all files older
			     than the specified time to be deleted.

	      Files whose age is more than
			     time hours are deleted if the prefix test is satisfied (default time is 72 hours).

	      The default action for
			     is  to  remove  files that are older than a specified time (see option).  The option is used to find files older than
			     time hours; however, the files are not deleted.  If the argument file is present the warning is placed in file;  oth-
			     erwise, the warnings go to the standard output.

	      Only files destined for system
			     sys are examined.	Up to 10 arguments can be specified.

	      The	     option sends mail to the owner of the file when it is deleted.  If a file is specified, an entry is placed in file.

       This program is typically started by (see cron(1M)).

WARNINGS

       Use of commands, including is discouraged because they are targeted for removal from HP-UX.  Use ftp(1) or rcp(1) instead.

FILES

       spool directory

SEE ALSO

       uucp(1), uux(1), cron(1M), uucleanup(1M).

       Tim O'Reilly and Grace Todino,
	      O'Reilly & Associates, Inc. USA.

       Grace Todino and Dale Dougherty,
	      O'Reilly & Associates, Inc. USA.

								  TO BE OBSOLETED						       uuclean(1M)