Adding argument handling with shift example script

Author: hackergil

basic/shift_args.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+set -e
+set -u
+
+dryrun=false
+
+function usage() {
+    echo "Usage: `basename $0` -p [project_name] -v [npm_version] --preid [prerelease_id] --dry-run"
+}
+
+if [ $# == 0 ]; then
+    usage
+fi
+
+while [[ $# -gt 0 ]]
+do
+    case $1 in
+        -p | --project )
+            shift
+            project=$1
+        ;;
+        -v | --version )
+            shift
+            version=$1
+        ;;
+        --preid )
+            shift
+            preid=$1
+        ;;
+        --dry-run )
+            dryrun=true
+        ;;
+        -h | --help )
+            usage
+            exit
+        ;;
+        * )
+            usage
+            exit 1
+    esac
+    shift
+done
+
+echo "Project: $project"
+echo "Version: $version"
+echo "Prerelease ID: $preid"
+echo "dry run: $dryrun"
+
+result=$(cd projects/storefrontstyles && npm publish .)
+echo $result