11.4.1 Netcat

Netcat is a computer networking service for reading from and writing to network connections, using TCP or UDP. Netcat can be used directly or easily driven by other programs and scripts. Netcat can often be abbreviated to the command ‘nc'. This is an example query using netcat.

$ nc whois.ripe.net 43
% This is the RIPE Database query service.
% The objects are in RPSL format.
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

descr: RIPE-NCC
origin: AS3333
mnt-by: RIPE-NCC-MNT
created: 1970-01-01T00:00:00Z
last-modified: 2008-09-10T14:27:53Z
source: RIPE

% This query was served by the RIPE Database Query Service version 1.75 (DB-3)

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