---
name: "ncbi-blast+"
section: "1"
platform: "linux"
package: "ncbi-blast+"
version: "2.16.0+ds-7"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ncbi-blast+"
---

# ncbi-blast+(1)

NCBI command tools for BLAST+

## NAME

ncbi-blast+ - NCBI command tools for BLAST+

## ONELINE DOCUMENTATION

**BLAST+ documentation is available online at http://www.ncbi.nlm.nih.gov/books/NBK1763/**

## DESCRIPTION

The NCBI BLAST+ is a group of tools for basic alignment search. BLAST+\
  is a rewrite of BLAST with new features and performance improvements. BLAST+ commands differ from original BLAST. For BLAST users, one should read\
  the BLAST USERS paragraph.

## CONFIGURATION

BLAST+ uses the BLASTDB environment variable to get default db directory. It is possible to update the file /etc/ncbi/.ncbirc to add the following: **\[BLAST\]** **BLASTDB=/var/lib/ncbi-blast+/db**

## BLAST USERS

The easiest way to get started using these command line applications is\
  by means of the legacy\_blast.pl PERL script which is bundled along with\
  the BLAST+ applications. To utilize this script, simply prefix it to the invocation of the C toolkit\
  BLAST command line application and append the --path option pointing to the  installation directory of the BLAST+ applications. For example, instead of using

**blastall -i query -d nr -o blast.out** use **legacy\_blast.pl blastall -i query -d nr -o blast.out --path /usr/bin**

## AUTHOR

Olivier Sallou (olivier.sallou (at) irisa.fr) - Man page and packaging NCBI - BLAST+