tcp-env(1) set up TCP-related environment variables


tcp-env [ -rR ] [ -ttimeout ] program [ arg ... ]


The input for tcp-env must be a TCP connection. tcp-env finds out information about that connection, puts the information into several environment variables as described in tcp-environ(5), and runs program with the given arguments.

Usually tcp-env is run from inetd. It might instead be run from another server that already sets up the right environment variables; if PROTO is set to TCP when tcp-env is invoked, tcp-env assumes that all the other variables are set up properly, and it does not check whether the input is a TCP connection.


(Default.) Attempt to obtain TCPREMOTEINFO from the remote host.
Do not attempt to obtain TCPREMOTEINFO from the remote host.
Give up on the TCPREMOTEINFO connection attempt after timeout seconds. Default: 30.