sshpass and rsync

1. Install Homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

2. Install sshpass

brew create https://sourceforge.net/projects/sshpass/files/sshpass/1.05/sshpass-1.05.tar.gz --force

will create a formula which you then can use normally as

brew install sshpass

3. Write gulp task

gulp.task( 'push:themes', function( done ) {
   var cmd = 'sshpass -p ' + remote.password + ' rsync -avzhe ssh --delete -L ' + paths.local.themes + ' ' + paths.remote.themes;
   exec( cmd, function( error, stdio, stderr ) {
      console.log( 's: ' + stdio + '\n' );
      console.log( 'e: ' + stderr + '\n' );
   } );
   done();
} );