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Change date time stamp of existing file

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# 1  
Old 07-28-2016
Hammer & Screwdriver Change date time stamp of existing file
I have a file hello.txt which was created today (today's date timestamp)

I wish to change its date timestamp (access, modified, created) to 1 week old i.e one week from now.

Code:
uname -a
SunOS mymac 5.11 11.2 sun4v sparc sun4v

Can you please suggest a easy way to do that ?
# 2  
Old 07-28-2016
Try touch.
# 3  
Old 07-28-2016
Quote:
Originally Posted by Don Cragun
Try touch.
I know that touch has a solution but i tried the below command to change the date timestamp to one week back (old) and it did not work.

Considering today is Thursday.
Code:
touch -d "previous Thursday" hello.txt
touch: bad time specification

Can you help me with the accurate command. I am not concerned about the time ... its just the date that I wish to change to one week back.
Last edited by rbatte1; 07-28-2016 at 07:40 AM..
# 4  
Old 07-28-2016
Today is 28 July 2016, below command will change the access time and modification time of file hello.txt to 21 July 2016 13:00 hrs
Code:
touch -t 1607211300 hello.txt

There is no creation time, therefore it cannot be changed :-)
Last edited by rbatte1; 07-28-2016 at 07:42 AM.. Reason: Added CODE tags
# 5  
Old 07-28-2016
Quote:
Originally Posted by Ramneekgupta91
Today is 28 July 2016, below command will change the access time and modification time of file hello.txt to 21 July 2016 13:00 hrs
Code:
touch -t 1607211300 hello.txt

There is no creation time, therefore it cannot be changed :-)
I m not looking for a static but a dynamic solution.

The date should change one week prior for any given file on any given day.
Last edited by rbatte1; 07-28-2016 at 07:42 AM..
# 6  
Old 07-28-2016
Quote:
Originally Posted by mohtashims
I m not looking for a static but a dynamic solution.
The date should change one week prior for any given file on any given day.
Hello mohtashims,

If you have GNU datein your system then following may help you in same.
Let's say we have following Input_file(as an example).
Code:
ls -ld   Input_file
-rw-rw-r-- 1 Singh_is_King   Singh_is_King  100 Jul 27 10:51  Input_file

Then following is the command for changing the timings.
Code:
touch -t $(date -d"1 week ago" +%y%m%d%H%M)   Input_file

Now after executing above command, when you check the Input_file details they will be as follows.
Code:
ls -ld   Input_file
-rw-rw-r-- 1 Singh_is_King   Singh_is_King  100 Jul 21 06:07  Input_file

Thanks,
R. Singh
Last edited by RavinderSingh13; 07-28-2016 at 07:15 AM..
# 7  
Old 07-28-2016
Does not work.

Please see the output:

Code:
touch -t date -d"1 week ago" +%y%m%d%H%m hello.txt
touch: bad time specification
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