if [ (( $year >= $3 )) ] && [ (( $year <= $4 )) ]
Errors:
line 11: syntax error near unexpected token `('
line 11: ` if [ (( $year >= $3 )) ] && [ (( $year <= $4 )) ] '
$3 and $4 are numbers, and year is a local variable and number too.
Whats the problem here? I can't get it.