This module registers only one expansion.
The contents of the expansion are the name of the program, and any arguments to it. For security reasons, the full path to the program must be used, e.g.,
/bin/true. The output of the expansion is any text that was printed by the program.
stdinof the executed program is connected to
stdoutof the executed program is captured by the module and returned as the output of the expansion.
stderrof the executed program is connected to
See the exec module for a description of the directives.
The configuration for the
echo module should not be changed. If
there is a need for another variant of the
exec module, then instead of modifying
echo, a new
module should be created .