Content-type: text/html Manpage of tcp-env

tcp-env

Section: User Commands (1)
Index Return to Main Contents

NAME

tcp-env - set up TCP-related environment variables

SYNOPSIS

tcp-env [ -rRhH ] [ -llocalname ] [ -ttimeout ] program [ arg ... ]

DESCRIPTION

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.

OPTIONS

-r: (Default.) Attempt to obtain TCPREMOTEINFO from the remote host.
-R: Do not attempt to obtain TCPREMOTEINFO from the remote host.
-h: (Default.) Look up the remote host name in DNS to set the environment variable TCPREMOTEHOST.
-H: Do not look up the remote host name in DNS; remove the environment variable TCPREMOTEHOST.
-llocalname: Do not look up the local host name in DNS; use localname for the environment variable TCPLOCALHOST. A common choice for localname is 0.
-ttimeout: Give up on the TCPREMOTEINFO connection attempt after timeout seconds. Default: 30.