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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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Time::localtime(3pm)					 Perl Programmers Reference Guide				      Time::localtime(3pm)

NAME
Time::localtime - by-name interface to Perl's built-in localtime() function SYNOPSIS
use Time::localtime; printf "Year is %d ", localtime->year() + 1900; $now = ctime(); use Time::localtime; use File::stat; $date_string = ctime(stat($file)->mtime); DESCRIPTION
This module's default exports override the core localtime() function, replacing it with a version that returns "Time::tm" objects. This object has methods that return the similarly named structure field name from the C's tm structure from time.h; namely sec, min, hour, mday, mon, year, wday, yday, and isdst. You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your core functions.) Access these fields as variables named with a preceding "tm_" in front their method names. Thus, "$tm_obj->mday()" corresponds to $tm_mday if you import the fields. The ctime() function provides a way of getting at the scalar sense of the original CORE::localtime() function. To access this functionality without the core overrides, pass the "use" an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the "CORE::" pseudo-package. NOTE
While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. AUTHOR
Tom Christiansen perl v5.16.2 2012-08-26 Time::localtime(3pm)
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