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Shell Programming and Scripting
grep - date & time range
Post 302395177 by coolatt on Monday 15th of February 2010 07:45:23 AM
02-15-2010
Quote:
Basically you need to convert the date to Julian Days for a date range or convert date/time to epoch seconds. You can do everything with epoch seconds, even though it is a tad longer. I use seconds.
Do you have perl or do you need a C example? You can do Julian Day arithmetic in shell, but that doesn't solve the date/time issue.
Do you have perl or do you need a C example? You can do Julian Day arithmetic in shell, but that doesn't solve the date/time issue.
Thanks a lot.
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LEARN ABOUT XFREE86
getdate
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)