arithmetic expression: expecting EOF:

[merlin214365]

Im getting this error in script

121: arithmetic expression: expecting EOF: "120 + 08"

Can anyone help


1 tmonth=$(date +%m)
2 tday=$(date +%d)
3 tyear=$(date +%Y)
4 month=$(cat /files/log.csv |grep $IP |cut -d "," -f 3|sort -u|cut -d "/" -f 1|sort -u|tail -n 1)
5 Day=$(cat /files/log.csv |grep $IP|cut -d "," -f 3|sort -u|cut -d "/" -f 2|sort -u|tail -n 1)
6 year=$(cat /files/log.csv |grep $IP|cut -d "," -f 3|sort -u|cut -d "/" -f 3|sort -u|tail -n 1)
119 tdymonth=$(($tmonth*30))
120 echo $tdymonth
121 tdydate=$(($tdymonth + $tday))
122 promonth=$(($month*30))
123 prodate=$(($promonth + $day))
124 o=$(($tdydate-$prodate))

[merlin214365]

Never mind I think I fixed it I forgot

Numerical values starting with a zero (0) are interpreted as numbers in octal notation

Fixed by stating the base of the number by using base#number.
So by placing a 10# before
tdydate=$((10#$tdymonth + 10#$tday))

[rusl]

I am still getting this error

arithmetic expression: expecting EOF: "10#1975 * 12 + 10#09"

wtf? earlier today I was getting this error then I added more spaces and it started working. Now it is not. Why is this so weird!?