```bash
# Load bash variables into memory
source .bashvars

time \
${ncbi_blastn} \
-db ${blast_dbs_dir}/${mirgene_mature_fasta_no_U%.*} \
-query ${output_dir_top}/${collapsed_reads_fasta} \
-out ${output_dir_top}/MirGene-BLASTn-eval_1.outfmt6 \
-task blastn-short \
-evalue 1 \
-max_hsps 1 \
-max_target_seqs 1 \
-outfmt 6 \
-num_threads ${threads} \
2> /dev/null
```