Date: Wed, 12 Sep 2012 14:47:04 -0700 From: Gary Kline <kline@thought.org> To: Waitman Gobble <gobble.wa@gmail.com> Cc: Polytropon <freebsd@edvax.de>, Matthew Seaman <matthew@freebsd.org>, FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: cksum entire dir?? Message-ID: <20120912214704.GB19460@ethic.thought.org> In-Reply-To: <CAFuo_fwhVO0hATPZLAqyn3hM5CNtdWyxMtoF2N8hmiLFKQg6cw@mail.gmail.com> References: <20120911213804.GA9817@ethic.thought.org> <20120912011443.5df17cf2.freebsd@edvax.de> <50502C51.5020601@FreeBSD.org> <20120912174625.GA17551@ethic.thought.org> <CAFuo_fwhVO0hATPZLAqyn3hM5CNtdWyxMtoF2N8hmiLFKQg6cw@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Sep 12, 2012 at 10:55:57AM -0700, Waitman Gobble wrote: > On Wed, Sep 12, 2012 at 10:46 AM, Gary Kline <kline@thought.org> wrote: > > > On Wed, Sep 12, 2012 at 07:31:45AM +0100, Matthew Seaman wrote: > > > On 12/09/2012 00:14, Polytropon wrote: > > > > % cksum <directory> > > > > > > > > and could obtain a checksum - so it _seems_ to work. > > > > After alteration of one file within the hierarchy a > > > > different result was printed. > > > > > > That will give you a checksum on the directory inode -- file names and > > > associated metadata only, not file content. In theory you could edit a > > > file without modifying any of the timestamps, and that wouldn't result > > > in any change to the directory checksum. Also, modifying things a few > > > layers down the filesystem hierarchy won't have any effect either. > > > > > > Generally I find the best test for differences between old and new > > > copies of a filesystem is 'rsync -avx -n ...' > > > > > > Also, sum and cksum have way too small a key size for this to be > > > reliable, since you can't tell a true result from a hash collision. Use > > > md5 or sha1 or sha256 for best results. > > > > > > > So this sha256 is *real*?? I have no md5 on my "fedora" > > that is on my desktop and m having trouble getting used to. > > but the gentleman who recommened cpio was right on the money. > > > > > > are you sure it's not 'md5sum' ? ... that seems to be on all my GNU/Linux > machines. > > Waitman Gobble > San Jose California USA > yup, you be right. altho we have no md5 [[does FBSD?]], fedora does have md5sum. makes me wonder why this flavor didnt do at least a symlink. oh well. thankee much. [[ axeing to save BW ]] > > > > Dr Matthew J Seaman MA, D.Phil. > > > PGP: http://www.infracaninophile.co.uk/pgpkey > > > > > > > > > > > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to " > > freebsd-questions-unsubscribe@freebsd.org" > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20120912214704.GB19460>