Error at step 5 (blastdbcmd) of finding_overlapping_regions.sh

[pyongheng]

Hi, my metagenome input files were metagenomes that were binned and used as input.
When running finding_overlapping_regions.sh, I get an error at the 'blastdbcmd' step.
It is saying that the start is not defined.
looking through the datasets,
ln 95:
"len=$length" '{if ($13 == "minus") print $2"\t"$10-len"
This results in '-1711' and causes an error in 'blastdbcmd' step.

Example of the blast output (tab input file):

NC_014248_1_genome_0:1000	3300047529_3_Ga0494058_00019	98.300	1000	13	1	1	1000	1284	289	0.0	1749	minus
NC_014248_1_genome_0:1000	3300047525_1_Ga0494053_00203	98.200	1000	14	1	1	1000	34610	35605	0.0	1744	plus
NC_014248_1_genome_0:1000	3300047525_1_Ga0494053_00209	97.000	1000	30	0	1	1000	30429	31428	0.0	1681	plus
NC_014248_1_genome_0:1000	3300047526_4_Ga0494054_00523	97.036	911	20	1	1	904	911	1	0.0	1526	minus