[CentOS] Re: Opposite of cp -u

[Robert Nichols]

Stephen Harris wrote:
> On Mon, Aug 06, 2007 at 06:27:20PM -0500, Robert Nichols wrote:
>>     for F in *
>>     do  cmp "$F" "/new/directory/$F" && touch -r "$F" "/new/directory/$F"
>>     done
>>
>> That will compare all the files and adjust the timestamp on the files
>> that are still the same as those on the backup.  Note that, despite
>> the quoting, the script will break if any of the filenames have embedded
>> whitespace because the "for F in *" will be parsed incorrectly.
> 
> Not in a sane shell.  Heh, not even in bash :-)
> 
>   bash-2.05b$ touch "a b"
>   bash-2.05b$ touch c
>   bash-2.05b$ touch d
>   bash-2.05b$ ls
>   a b  c  d
>   bash-2.05b$ for a in *
>   > do
>   > echo Result is: $a
>   > done
>   Result is: a b
>   Result is: c
>   Result is: d

OK.  Color me paranoid, or maybe "once burned, twice shy."

-- 
Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.