Esto ya es parte del monitor.js

bin/mayseal.js

-#!/usr/bin/node
-// vim:syntax:filetype=javascript:ai:sm
-// vim:expandtab:backspace=indent,eol,start:softtabstop=4
-
-"use strict"
-
-const   Libbfa      =   require( process.env.BFAHOME + '/bin/libbfa.js');
-
-function    mayseal()
-{
-    var bfa         =   new Libbfa();
-    var web3        =   bfa.newweb3();
-    var me          =   web3.eth.defaultAccount.toLowerCase();
-    web3.eth.isMining().then( function(isMining){
-        web3.eth.getSigners().then( function(x){
-            var lcsealers   =   x.map( name => name.toLowerCase() );
-            // console.log( "Miners are:\n\t" + lcsealers.join("\n\t") );
-            var isSigner    =   (lcsealers.indexOf(me) > -1);
-            var sealerfile  =   bfa.nodedir + '/miner';
-            var not         =   "not ";
-            if ( isSigner )
-                not         =   "";
-            console.log( "Account " + me + " is " + not + "allowed to seal." );
-            if ( isSigner )
-            {
-                if ( ! bfa.fs.existsSync( sealerfile ) )
-                {
-                    var fd  =   bfa.fs.openSync( sealerfile, 'a' );
-                    bfa.fs.close( fd );
-                    console.log( "Created 'sealer' file " + sealerfile );
-                }
-                if ( ! isMining )
-                {
-                    web3.eth.minerstart();
-                    console.log( 'Started to seal.' );
-                }
-                else
-                {
-                    console.log( "You are already sealing. All is well." );
-                }
-            }
-            else
-            {
-                if ( bfa.fs.existsSync( sealerfile ) )
-                {
-                    bfa.fs.unlinkSync( sealerfile );
-                    console.log( "Deleted 'sealer' file " + sealerfile );
-                }
-                if ( isMining )
-                {
-                    web3.eth.minerstop();
-                    console.log( 'I was trying to seal, but am not authorized. Stopped trying.' );
-                }
-                else
-                {
-                    console.log( "I wasn't trying to seal anyway. All is well." );
-                }
-            }
-        });
-    },function(x){
-        console.log(x);
-        process.exit(1);
-    })
-}
-
-mayseal();