## Fast download BLAST databases from NCBI Database files (volumes) are downloaded in parallel: number of threads to use is determined automatically. MD5 checksum is verified and the database volume extracted upon download. Database volumes are not downloaded in a particular order. The volumes are updated if a newer version is available on the server, or re-downloaded if corrupt. Aborted downloads are safely resumed. `ncbi-blast-dbs` is faster than NCBI's `update_blastdb.pl`. But unlike `update_blastdb.pl`, which is a pure Perl script, `ncbi-blast-dbs` delegates download and checksum verification to `wget` and `md5sum` and is thus not as universal. ### Installation gem install ncbi-blast-dbs ### Usage #### List available BLAST databases ncbi-blast-dbs #### Download all volumes of a BLAST database ncbi-blast-dbs nt nr Databases are downloaded one after the other. Volumes of each database are downloaded in parallel. Downloads are placed in the current directory. NCBI expects users to submit their email address when downloading data from their FTP server. To comply with that, download as: email="my email address here" ncbi-blast-dbs nr