edirect v14.05.01 - scripts for remotely searching, and working with, NCBI databases
Entrez Direct (EDirect) is an advanced method for accessing the NCBI's set of interconnected Entrez databases (publication, nucleotide, protein, structure, gene, variation, expression, etc.) from a terminal window. It uses command-line arguments for the query terms and combines individual operations with UNIX pipes.
EDirect also provides an argument-driven function that simplifies the extraction of data from documentsummaries or other results that are returned in XML format. Queries can move seamlessly between EDirect commands and UNIX utilities or scripts to perform actions that cannot be accomplished entirely within Entrez.