help scripts to avoid mistakes

git-merge-push-production.sh

+#!/bin/bash
+
+git_cmds=("checkout production" "merge devel" "push" "checkout devel")
+
+for cmd in "${git_cmds[@]}"
+do
+    if ! git $cmd
+    then
+	exit $?
+    fi
+done

puppet.sh

+#!/bin/bash
+
+exec sudo /opt/puppetlabs/bin/puppet $*