1 files changed, 9 insertions, 10 deletions
diff --git a/scripts/policy/wait_for_port.sh b/scripts/policy/wait_for_port.sh
index c50cd970..1d2f5155 100755
--- a/scripts/policy/wait_for_port.sh
+++ b/scripts/policy/wait_for_port.sh
@@ -1,35 +1,34 @@
-#!/bin/bash
+#!/bin/sh
 
 tmout=120
 cmd=
-
 while getopts c:t: opt; do
     case "$opt" in
     c) cmd="$OPTARG" ;;
     t) tmout="$OPTARG" ;;
     esac
 done
-let nargs=$OPTIND-1
+nargs=$(expr $OPTIND - 1)
 shift $nargs
 
-let even_args=$#%2
-if [[ $# -lt 2 || $even_args -ne 0 ]]; then
-	echo "args: [-t timeout] [-c command] hostname1 port1 hostname2 port2 ..." >&2
-	exit 1
+even_args=$(expr $# % 2)
+if [ $# -lt 2 -o $even_args -ne 0 ]; then
+    echo "args: [-t timeout] [-c command] hostname1 port1 hostname2 port2 ..." >&2
+    exit 1
 fi
 
-while [[ $# -ge 2 ]]; do
+while [ $# -ge 2 ]; do
     export host=$1
     export port=$2
     shift
     shift
 
     echo "Waiting for $host port $port..."
-    timeout $tmout bash -c 'until nc -vz "$host" "$port"; do echo -n ".";
+    timeout $tmout sh -c 'until nc -vz "$host" "$port"; do echo -n ".";
         sleep 1; done'
     rc=$?
 
-    if [[ $rc != 0 ]]; then
+    if [ $rc != 0 ]; then
         echo "$host port $port cannot be reached"
         exit $rc
     fi