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Touch command in unix

Hi

I want to change the file's date from 9/27/2011 to 9/9/2011. How can I do this in unix using touch.

It should change only the date.
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new_perl_user
Asked:
new_perl_user
1 Solution
 
_-W-_Commented:
Here are three ways:
 # touch -t 200701310846.26 index.html
 # touch -d '2007-01-31 8:46:26' index.html
 # touch -d 'Jan 31 2007 8:46:26' index.html
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new_perl_userAuthor Commented:
I mean there are around 100 files with date as 9/27/2011 . I need to change them to 9/9/2011
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woolmilkporcCommented:
FILE=/path/to/testfile
DATE="20110909"
touch -t ${DATE}$(echo $(stat -c "%z" $FILE) | awk -F":| |\\\." '{print $2 $3 "." $4}') $FILE
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PapertripCommented:
touch -t 201109090000 filename

Open in new window

or, since the year is the same,
touch -t 09090000 filename

Open in new window


-t STAMP
              use [[CC]YY]MMDDhhmm[.ss] instead of current time
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PapertripCommented:
Woops didn't see the other answers, walked away for a few while writing my answer :p
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woolmilkporcCommented:
OK, for the 100 files

touch -t 201127090000 /tmp/from
touch -t 201127092359 /tmp/to

DATE="20110909"

find /dir -type f -newer /tmp/from ! -newer /tmp/to |while read FILE
 do
   touch -t ${DATE}$(echo $(stat -c "%z" $FILE) | awk -F":| |\\\." '{print $2 $3 "." $4}') $FILE
 done
   
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woolmilkporcCommented:
You can also use

... stat -c "%y" ... ...

to keep the time of last modification, or

... stat -c "%x" ... ...

to keep the time of last access, instead of my

.. stat -c "%z" ... ...

which will keep the time of last change.

wmp
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Hugh McCurdyCommented:
Is this something you want to do just once or several times?  

If several times, accept one of the fine answers above.

If just once, and you are good with vi, you can do something like thsi

ls  > foo
vi foo
1,$s/^/touch -d '2007-01-31 8:46:26' /
:x
sh foo

Credit goes to -W- for providing the touch command.


I don't want any points for this because this is a scripting thread and I gave a vi answer and the other answers are good and earlier.  (It's just quicker for me, sometimes, when I just have to do whatever the task is once.)
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