Shell Programming and Scripting

$
$ date -d "Nov 9 11:35:28 2009" +%Y%m%d%H%M
200911091135
$
$ date -d "Apr 1 9:5:7 2009" +%Y%m%d%H%M
200904010905
$

/>date -d "Nov 9 11:35:28 2009" +%Y%m%d%H%M
date: illegal option -- d
Usage: date [-u] [+Field Descriptors]

     -d dst  Set the kernel's value for daylight saving time.  If dst is non-
             zero, future calls to gettimeofday(2) will return a non-zero for
             tz_dsttime.

       -d, --date=STRING
              display time described by STRING, not ‘now'

$
$ d="Nov 9 11:35:28 2009"
$
$ echo $d | perl -MDate::Parse -ne '@x=split; @y=strptime("$x[1] $x[0] $x[3] $x[2]");
                                    printf("%d%02d%02d%02d%02d\n",(1900+$y[5]),($y[4]+1),$y[3],$y[2],$y[1])'
200911091135
$
$ d="Apr 1 9:5:7 2009"
$
$ echo $d | perl -MDate::Parse -ne '@x=split; @y=strptime("$x[1] $x[0] $x[3] $x[2]");
                                    printf("%d%02d%02d%02d%02d\n",(1900+$y[5]),($y[4]+1),$y[3],$y[2],$y[1])'
200904010905
$
$