09-08-2006
This should work even if the clock ticks past midnight.....
timenow=20060907150000 # Your unix time
timeweb=20060907160000 # The time you got from the web
timediff=020000 # your 2 hour difference
if [ $timeweb -le `expr $timenow + $ timediff` ] | [ $timeweb -ge `expr $timenow - $timediff` ]
then
echo "Its a GOOD time :-)"
else
echo "Its a BAD time!"
fi
Not fully tested as you are adding and subtracting number with 14 digits, that could be a little big for UNIX, UNIX should roll it over.
You need to test it over a period to ensure it works for you.
The other method is to use "subtr" and exctract only the HHMMSS. The only issue with that is you will need to be aware of the clock changing days at midnight.
eg expr substr 20060907235900 9 6 gives 235900 while
expr substr 20060908000000 9 6 gives 000000
Haveagoodweekend
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