argv_from_environment

README

Argv from Environment

Nearly the same as argv_from_source but environment variables may be used to override the compile-time config.

Environment Variables

The address and file may be set with environment variables, overriding compile-time settings, as follows

Default Variable	Description
ALPT4ATS_ADDRESS	TCP Server Address
ALPT4ATS_FILE	File to send on the TCP connection

The variable names may be changed at compile-time, as below.

Compile-time Config

Compile time configuration is possible with the linker's -X (as in go build -ldflags '-X main.Foo=bar'). The variables are as follows

Variable	Default	Description
main.Address	localhost:4444	TCP Server Address
main.AddressEnvVar	ALPT4ATS_ADDRESS	Environment variable which sets the TCP Server Address
main.File	/etc/hosts	File to send on the TCP connection
main.FileEnvVar	ALPT4ATS_FILE	Environment variable which sets the File to send on the TCP connection

When building with the Makefile these may be passed in with the LINKFLAGS environment variable, as in

LINKFLAGS="-X main.Address=example.com:8080" make

Documentation

Overview

Program argv_from_environment - argv_from_source with optional environment variables