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| tcp-environ(5) | FreeBSD File Formats Manual | tcp-environ(5) |
NAME
tcp-environ - TCP-related environment variablesDESCRIPTION
The following environment variables describe a TCP connection. They are set up by tcp-env, tcpclient, and tcpserver. Note that TCPLOCALHOST, TCPREMOTEHOST, and TCPREMOTEINFO can contain arbitrary characters.- PROTO
- The string TCP.
- TCPLOCALHOST
- The domain name of the local host, with uppercase letters converted to lowercase. If there is no currently available domain name for the local IP address, TCPLOCALHOST is not set.
- TCPLOCALIP
- The IP address of the local host, in dotted-decimal form.
- TCPLOCALPORT
- The local TCP port number, in decimal.
- TCPREMOTEHOST
- The domain name of the remote host, with uppercase letters converted to lowercase. If there is no currently available domain name for the remote IP address, TCPREMOTEHOST is not set.
- TCPREMOTEINFO
- A connection-specific string, perhaps a username, supplied by the remote host via 931/1413/IDENT/TAP. If the remote host did not supply connection information, TCPREMOTEINFO is not set.
- TCPREMOTEIP
- The IP address of the remote host.
- TCPREMOTEPORT
- The remote TCP port number.
SEE ALSO
tcpclient(1), tcpserver(1), tcp-env(1), tcp(4)
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