[COMMON] Fix arithmetic loop bashisms

[oom.git] / kubernetes / helm / plugins / undeploy / undeploy.sh

diff --git a/kubernetes/helm/plugins/undeploy/undeploy.sh b/kubernetes/helm/plugins/undeploy/undeploy.sh
index 8191174..1689bf1 100755 (executable)
--- a/kubernetes/helm/plugins/undeploy/undeploy.sh
+++ b/kubernetes/helm/plugins/undeploy/undeploy.sh
@@ -2,7 +2,7 @@
 
 usage() {
 cat << EOF
-Delete an umbrella Helm Chart, and its subcharts, that was previously deployed using 'Helm deploy'. 
+Delete an umbrella Helm Chart, and its subcharts, that was previously deployed using 'Helm deploy'.
 
 Example of deleting all Releases that have the prefix 'demo'.
   $ helm undeploy demo
@@ -23,7 +23,7 @@ undeploy() {
 
   array=($(helm ls -q --all | grep $RELEASE))
   n=${#array[*]}
-  for (( i = n-1; i >= 0; i-- ))
+  for i in $(seq $(($n-1)) -1 0)
   do
     helm del "${array[i]}" $FLAGS
   done