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SNAPSHOT-DIR(1C)					      SNAPSHOT-DIR(1C)

NAME
       snapshot-dir - create a snapshot database of a directory tree

SYNOPSIS
       snapshot-dir  [-vN]  directory  [directory...]  [:output=database-name]
       [:old=database-name] [:devcross=true]

DESCRIPTION
       snapshot-dir

       Finds all files in the directory, recursively, and writes to the [data‐
       base-name]  or  to standard output a description of each file including
       name, file modes, sizes, dates, and an MD5 checksum of each  REG	 file,
       and the contents of each symbolic link.

       The database can be further processed by other programs that can deter‐
       mine what has changed in a file system.

       The directory arguments can also be regular file names.

       The -v argument lets you specify a verbosity level.

       If :old=database-name is given then the old database will be used as  a
       cache  of md5 values. The md5 of a regular file will only be recomputed
       for files which have been apparently changed according to the operating
       system  reported	 status. Programs can of course modify a file and then
       set the status values back, so do not use this technique	 during	 secu‐
       rity audits.

       If :devcross=false is specified then all entries which do not reside on
       the same "device" as the starting directory will be  ignored.  This  is
       useful  for  creating a snapshot that can be compared with a filesystem
       backup tape.

       # snapshot-dir /tmp/gjc
       ("/tmp/gjc/."
	(dev 8 0)
	(ino . 8034)
	(mode DIR XOTH ROTH XGRP RGRP XUSR WUSR RUSR)
	(nlink . 3)
	(uid . 148)
	(gid . 0)
	(rdev . 36789)
	(size . 512)
	(atime . 815151544)
	(mtime . 815085346)
	(ctime . 815085346)
	(blksize . 8192)
	(blocks . 2)
	(flags . 0)
	(gen . 815085365)
       )
       ("/tmp/gjc/foo"
	(dev 8 0)
	(ino . 8059)
	(mode DIR XOTH ROTH XGRP RGRP XUSR WUSR RUSR)
	(nlink . 3)
	(uid . 148)
	(gid . 0)
	(rdev . 36821)
	(size . 512)
	(atime . 815151319)
	(mtime . 815151527)
	(ctime . 815151527)
	(blksize . 8192)
	(blocks . 2)
	(flags . 0)
	(gen . 815085366)
       )
       ("/tmp/gjc/foo/test.txt"
	(md5 . "bd7090333ff9eabec6a4c1f9461aaaff")
	(dev 8 0)
	(ino . 8085)
	(mode REG ROTH RGRP WUSR RUSR)
	(nlink . 1)
	(uid . 148)
	(gid . 0)
	(rdev . 36963)
	(size . 13)
	(atime . 815151527)
	(mtime . 815151537)
	(ctime . 815151537)
	(blksize . 8192)
	(blocks . 2)
	(flags . 0)
	(gen . 815151527)
       )

EXIT STATUS
       Errors result in a non-zero exit status.

AUTHOR
       gjc@world.std.com

SEE ALSO
       siod http://people.delphi.com/gjc/siod.html

FILES
       /usr/local/bin/snapshot-dir			   /usr/local/bin/siod
       /usr/local/lib/siod/find-files.scm

				     LOCAL		      SNAPSHOT-DIR(1C)

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