ss="keyword">val</span> read_command_output</span> : <code class="type">?verbose:bool -><br>       ?env:string array -><br>       ?metadata:(string * string) list -> <a href="OpamSystem.html#TYPEcommand">command</a> -> string list</code></pre><div class="info ">
<code class="code">read_command_output cmd</code> executes the command <code class="code">cmd</code> in the
    correct OPAM environment and return the lines from stdout if the command
    exists normally. If the command does not exist or if the com