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I was wondering if there is a possible way to figure out the julian date for a specific day. For example September 2nd 1984 is the 246th day. I want to be able to capture and use the 246 number. Also I have been using If statements (a ton of them) to figure out if a date is valid. Curious if there is a quick way. Im using /bin/bash. Here is a sample of my code If there a quicker way of figuring this out. Thanks
if [ $YR -gt `date +%Y` ]
then
echo "You entered $BIRTHDATE, which is a future date, please enter your birthdate in the form YYYYMMDD"
elif [ $MTH -gt "12" ] || [ $MTH -eq 0 ] || [ $YR -eq 0 ] || [ $DAY -eq 0 ]
then
echo "You entered $BIRTHDATE, which is an invalid date. Please enter your birthdate in the form YYYYMMDD"
I'd be interested to know what version you are using because it seems very odd behaviour for it to return another value - I'm using slack current with:
rossy - trigger - Thu Jun 08 20:06:38
~> date --version
date (GNU coreutils) 5.96
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