Replace $ENVVAR
or ${ENVVAR}
references in its input with values from the environment.
substenv [<flags>] [<input>]
Flags:
--help Show help.
-r, --regex Use slower but less greedy regex parser
--version Show application version.
Args:
[<input>] Input file or stdin if not given
Install with
$ go get github.com/ilkka/substenv