Merge pull request #3 from thecloudnatives/add-prune-unused-dry-run

Add --dry-run flag instead of prompt

Author: etiennetremel

README.md

@@ -33,6 +33,7 @@ Usage:
 
 Options:
     -n, --namespace='': If present, the namespace scope for this CLI request
+    --dry-run: If true, only print the object that would be pruned, without deleting it.
     -h, --help: Display this help
 ```
 

prune-unused/kubectl-prune_unused.sh

@@ -16,6 +16,7 @@ function usage() {
   echo ""
   echo "Options:"
   echo "    -n, --namespace='': If present, the namespace scope for this CLI request"
+  echo "    --dry-run: If true, only print the object that would be pruned, without deleting it."
   echo "    -h, --help: Display this help"
   exit 0
 }
@@ -26,6 +27,7 @@ then
 fi
 
 resource=$1
+dry_run="false"
 
 while test $# -gt 1
 do
@@ -40,6 +42,10 @@ do
       fi
       shift
       ;;
+    --dry-run)
+      dry_run="true"
+      shift
+      ;;
     -h|--help)
       usage
       ;;
@@ -138,14 +144,12 @@ then
   exit 0
 fi
 
-echo "About to delete the following $resource: ${resource_name_list}"
-
-# confirmation prompt
-read -p "Delete listed resource(s)? [yes/no]: " -r
-if [[ $REPLY =~ ^[Yy]es$ ]]
-then
-  for resource_name in $resource_name_list
-  do
+for resource_name in $resource_name_list
+do
+  if [ "$dry_run" == "true" ]
+  then
+    echo "${resource} ${resource_name} deleted (dry run)"
+  else
     kubectl delete $resource $resource_name $namespace_arg
-  done
-fi
+  fi
+done