Gawk/Special-Network
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5.8.2 Special Files for Network Communications
gawk
programs
can open a two-way
TCP/IP connection, acting as either a client or a server.
This is done using a special file name of the form:
/net-type/protocol/local-port/remote-host/remote-port
The net-type
is one of ‘inet
’, ‘inet4
’, or ‘inet6
’.
The protocol
is one of ‘tcp
’ or ‘udp
’,
and the other fields represent the other essential pieces of information
for making a networking connection.
These file names are used with the ‘|&
’ operator for communicating
with a coprocess
(see section Two-Way Communications with Another Process).
This is an advanced feature, mentioned here only for completeness.
Full discussion is delayed until
Using gawk
for Network Programming.