beautify parallel mode

Signed-off-by: Nico Schottelius <nico@kr.ethz.ch>

bin/cdist-mass-deploy

@@ -25,21 +25,22 @@
 [ $# -ge 1 ] || __cdist_usage "[-p] <target host> [target host ...]"
 set -eu
 
+parallel=""
 if [ "$1" = "-p" ]; then
    parallel=yes
-else
-   parallel=""
+   shift
 fi
 
 while [ $# -ge 1 ]; do
-   if [ "$parallel" ]; then
-      cdist-deploy-to "$1" &
-   else
-      cdist-deploy-to "$1"
-   fi
+   # always assume we run parallel
+   cdist-deploy-to "$1" | awk -v host=$1 '{ print "[" host "]" $0 }"' &
    shift
+
+   # if not, wait for it _now_
+   [ "$parallel" ] || fg
 done
 
+# else wait after all are started
 if [ "$parallel" ]; then
    echo "Waiting for cdist-deploy-to jobs to finish..."
    wait