On April 20, 2006 06:55 am, Miner, Jonathan W (CSC) (US SSA)
wrote:
> Careful using md5sum... You're going to update all the access
> times on all the files, if you do any storage management
> stuff, you're suddenly going to see that all of your files
> just got accessed.
>
> Having said that... here is a script that "should" do it:
Alternatively build the list of md5sums from the source directory
and then use md5sum -c --status to check it. Then you can later
check the integrity of the backup even if the source no longer
exists. (Actually what I do is I generate the md5sum list
before doing the copy, sitting it at the root of the tree).
>
> src={your source directory}
> cpy=(the copied directory}
>
> cd $src
> find . -type f -print | while read f; do
> if [ `md5sum $src/$f $cpy/$f | cut -d' ' -f1 | uniq | wc -l`
> == 2 ]; then echo "ERROR: $f differs"
> fi
> done
>
>
> -----Original Message-----
> From: redhat-list-bounces@xxxxxxxxxx on behalf of zhicheng
> wang Sent: Thu 04/20/2006 09:35 AM
> To: General Red Hat Linux discussion list
> Cc:
> Subject: Re: how to check if the restored and original are the
> same thanks. this was what i was thinking. but we have tera
> bytes of data.
>
> even for testing, we need to test at least 200GB of
> data. how do i do that using md5sum for millions of
> files?
>
> cheng
>
> --- Harry Hoffman <hhoffman@xxxxxxxxxxxxxxxx> wrote:
> > You're probably better doing a md5sum of all of the
> > files and then
> > diff'ing that.
> >
> > This will you'll know if a file's content has
> > changed instead of just
> > whether the file is in both places.
> >
> > Cheers,
> > Harry
> >
> > Lunt, Nick wrote:
> > >> -----Original Message-----
> > >> From: zhicheng wang [mailto:wang_zc@xxxxxxxxxxx]
> > >> Sent: 20 April 2006 13:57
> > >> To: redhat-list@xxxxxxxxxx
> > >> Subject: how to check if the restored and
> >
> > original are the same
> >
> > >> Dear all
> > >>
> > >> does anyone know how to verify if two directories
> >
> > are
> >
> > >> the same:
> > >
> > > Theres probably better methods but how about this
> > >
> > > ls -lR /dir1 > /tmp/dir1.out
> > > ls -lR /dir2 > /tmp/dir2.out
> > > diff /tmp/dir1.out /tmp/dir2.out
> > >
> > >
> > > Wesleyan Administration Services Ltd registered
> >
> > number 5188850 and Wesleyan Unit Trust Managers Ltd
> > registered number 2114859 ("WUTM Ltd") are wholly
> > owned subsidiary companies of Wesleyan Assurance
> > Society, whose registered number is ZC145. WUTM Ltd
> > is a member of IMA. For ISA/PEP/Unit Trusts
> > Administration Centre: PO Box 9033, Chelmsford, SM99
> > 2WQ Telephone: 0870 601 6129 Wesleyan Assurance
> > Society and WUTM Ltd are authorised and regulated by
> > the Financial Services Authority. Head Office,
> > Colmore Circus, Birmingham B4 6AR. Telephone: 0121
> > 200 3003 Fax 0121 200 2971. Website:
> > www.wesleyan.co.uk Telephone calls may be recorded
> > for monitoring and training purposes.
> >
> > > CONFIDENTIALITY NOTICE
> > >
> > > This communication and the information it contains
> >
> > is intended for the person or organisation to whom
> > it is addressed. Its contents are confidential and
> > may be protected in law. Unauthorised use, copying
> > or disclosure of any of it may be unlawful. If you
> > are not the intended recipient, please contact us
> > immediately.
> >
> > > The contents of any attachments in this e-mail may
> >
> > contain software viruses, which could damage your
> > own computer system. While every reasonable
> > precaution to minimise this risk has been taken, we
> > cannot accept liability for any damage that you
> > sustain as a result of software viruses. You should
> > carry out your own virus checking procedure before
> > opening any attachment.
> >
> > > Delivered using mail2.wesleyan.co.uk
> >
> > --
> > Harry Hoffman
> > Integrated Portable Solutions, LLC
> > 877.846.5927 ext 1000
> > http://www.ip-solutions.net/
> >
> > > --
> >
> > redhat-list mailing list
> > unsubscribe
>
> mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe
>
> > https://www.redhat.com/mailman/listinfo/redhat-list
>
> Euro-China Medlink ltd
> http://www.euro-china.co.uk
>
>
>
> ___________________________________________________________
> 24 FIFA World Cup tickets to be won with Yahoo! Mail
> http://uk.mail.yahoo.com
--
Bill Medland
mailto:billmedland@xxxxxxxxxxxxxxxx
http://webhome.idirect.com/~kbmed
--
redhat-list mailing list
unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe
https://www.redhat.com/mailman/listinfo/redhat-list
