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Full Discussion: Need help in changing Mod time of a file
Top Forums Shell Programming and Scripting Need help in changing Mod time of a file Post 302239133 by era on Tuesday 23rd of September 2008 02:45:07 AM
Old 09-23-2008
You can easily convert epoch to human-readable and/or the format expected by touch -t with Perl.

Code:
touch -m -t $(perl -e '@l=localtime(shift);
  printf "%02i" x 5 . "\n", $l[5]+1900, @l[4,3,2,1]' 1222079885) shell2.ksh

If your shell is very old, you'll need to use `...` instead of $(...), with grave accents / backticks (ASCII 96; not regular straight quotes!) around the Perl command.
 

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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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