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Full Discussion: What to do when mtime doesn't work?
Top Forums Shell Programming and Scripting What to do when mtime doesn't work? Post 302151871 by reborg on Monday 17th of December 2007 08:52:09 PM
Old 12-17-2007
Touch the file once manually. Then after you have found the list of files touch it again.

manually:
Code:
touch my_touch_file

Then in the script:
Code:
find <dir> -newer my_touch_file > listoffiles.txt
touch my_touch_file
cpio -pdumv /somewhere/else < listoffiles.txt

or do it in the background:

Code:
find <dir> -newer my_touch_file | cpio -pdumv /somewhere/else &
touch my_touch_file
wait


Save the list fist, and then feed that into cpio, otherwise you could get a file that will arrive while you are doing the cpio and you'll never retrieve it.

Porter has a point which I was also wondering about, how can you be sure you won't get a partial? If it is longer term storage it doesn't matter since you will get them next time around, but if the files are being processed then you could end up processing an incomplete file.
 

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LEARN ABOUT OPENSOLARIS

touch

touch(1B)					     SunOS/BSD Compatibility Package Commands						 touch(1B)

NAME

       touch - change file access and modification times

SYNOPSIS

       /usr/ucb/touch [-acfm] file...

DESCRIPTION

       touch sets the access and modification times of each file to the current time. file is created if it does not already exist.

OPTIONS

       -a    Change the access time of file. Do not change the modification time unless -m is also specified.

       -c    Do not create file if it does not exist.

       -f    Attempt to force the touch in spite of read and write permissions on file.

       -m    Change the modification time of file. Do not change the access time unless -a is also specified.

USAGE

       See largefile(5) for the description of the behavior of touch when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).

EXIT STATUS

       The following exit values are returned:

       0     touch executed successfully and all requested changes were made.

       >0    An error occurred. touch returns the number of files for which the times could not be successfully modified.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       touch(1), attributes(5), largefile(5)

SunOS 5.11							    26 Oct 1995 							 touch(1B)
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