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Full Discussion: Date to epoch problem
Top Forums Shell Programming and Scripting Date to epoch problem Post 302354436 by radoulov on Friday 18th of September 2009 06:14:53 AM
Old 09-18-2009
I don't understand the last post, but, if the GNU date program is not available,
you could use somethig like this:

Code:
perl -MTime::Local -le'       
    @dt = shift =~ /(\d{2})/g;
    print timelocal $dt[6], $dt[5], $dt[4], $dt[3], $dt[2] - 1,
      ( join "", @dt[ 0 .. 1 ] ) - 1900
  ' <input>

For example:

Code:
% perl -MTime::Local -le'       
@dt = shift =~ /(\d{2})/g;
print timelocal $dt[6], $dt[5], $dt[4], $dt[3], $dt[2] - 1,
  ( join "", @dt[ 0 .. 1 ] ) - 1900
  ' 20090918231000
1253308200

 

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GETDATE(1)							   User Commands							GETDATE(1)

NAME
getdate - AME SYNOPSIS
[-dv][-n dec][-f format] [ra dec sys] itype2otype [date and/or time] DESCRIPTION
Convert date and time between various formats [-dv][-n dec][-f format] itype2otype @file itype: nfd=ISOFITS fd=FITS, dt=yyyy.mmdd, hr=hh:mm:ss, deg=dd:mm:ss jd=Julian Date, mjd=Modified Julian Date hjd=Heliocentric Julian Date, mhjd=Modified HJD ep=epoch, epj=Julian epoch, epb=Besselian epoch lt=local time, ut=UT, ts=seconds since 1950-01-01 now=current time, ang=fractional degrees otype: fd=FITS, dt=yyyy.mmdd, jd=Julian Date, mjd=Modified Julian Date hjd=Heliocentric Julian Date, mhjd=Modified HJD hr=hh:mm:ss, deg=dd:mm:ss, ang=fractional degrees ep=epoch, epj=Julian epoch, epb=Besselian epoch ts=seconds since 1950-01-01, tsu=Unix sec, tsi=IRAF sec gst=Greenwich Sidereal Time, lst=Local Sidereal Time @file: First one or two columns are in itype format ra dec sys: Need for Heliocentric conversions -a: Append date to input file, if there is one -d: Print date without time -e: Print output as ET/TDT/TT converting from UT -f: Format for output number (C printf) -h hours: Longitude in hours, west positive -l degrees: Longitude in degrees, west positive -n: Number of decimal places in sec, epoch, JD -t: Print time without date -v: Verbose getdate 3.8.4 June 2012 GETDATE(1)
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