Value too great for base (error token is “09”)

Question

When running this part of my bash script am getting an error

Script

value=0
for (( t=0; t <= 4; t++ ))
do
d1=${filedates[$t]}
d2=${filedates[$t+1]         


        

Answer 1

d1 and d2 are dates in that form 2014-01-09 and 2014-01-10

and then

((diff_sec=d2-d1))

What do you expect to get? ((diffsec=2014-01-09-2014-01-10)) ??

You need to convert the dates to seconds first:

d1=$( date -d "${filedates[$t]}" +%s )
d2=$( date -d "${filedates[$t+1]}" +%s )
(( compare = (d2 - d1) / (60*60*24) ))
(( value += compare ))