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EDIRECT(1) NCBI Entrez Direct User's Manual EDIRECT(1)


edirect - access NCBI Entrez from the command line


edirect -version

esearch (edirect -search) options

elink (edirect -link) options

efilter (edirect -filter) options

esummary (edirect -summary) options

efetch (edirect -fetch) options

einfo (edirect -info) options

epost (edirect -post) options

espell (edirect -spell) options

ecitmatch (edirect -citmatch) options

eproxy (edirect -proxy) options

econtact (edirect -contact) options

enotify (edirect -notify) options

eaddress (edirect -address) options


edirect (Entrez Direct) is a command-line utility for consulting NCBI's set of interconnected databases (publication, sequence, structure, gene, variation, expression, etc.) in a variety of fashions, each of which is documented individually in a dedicated man page.


Most subcommands accept the following options, in addition to command-specific options.

Print usage information.
Send the given e-mail address to have someone to notify in case a runaway script causes problems with an NCBI Entrez server.
Send the given client name.
Force the use of GET rather than POST HTTPS requests.
Specify a file of shortcut keywords and query strings or URL sections.
Suppress connection failure retry messages.
Display the ENTREZ_DIRECT XML field values at each step.
Print the internal URL query and XML results of each step.
Specify a particular server for quality assurance testing.


eaddress(1), ecitmatch(1), econtact(1), efetch(1), efilter(1), einfo(1), elink(1), enotify(1), entrez-phrase-search(1), epost(1), eproxy(1), esearch(1), espell(1), esummary(1), nquire(1), xtract(1).

2017-01-24 NCBI