add bin file for running postal actions

bin/postal

@@ -0,0 +1,93 @@
+#!/bin/bash
+ROOT_DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )/.." && pwd )
+set -e
+
+# If we're executing from /usr then we should update the root directory
+# to our default installation path and we should be allowed to sudo.
+if [ $ROOT_DIR == "/usr" ]; then
+  SHOULD_SUDO="yes"
+  ROOT_DIR=/opt/postal/app
+else
+  SHOULD_SUDO="no"
+fi
+
+# If we we can sudo and the current user isn't postal, then automatically
+# run commands as the postal user
+if [ $SHOULD_SUDO == "yes" ] && [ $USER != "postal" ]; then
+    run() {
+        HOME=/opt/postal
+        eval "sudo -u postal $1"
+    }
+else
+    run() {
+        eval $1
+    }
+fi
+
+# Enter the root directory
+cd $ROOT_DIR
+
+# Run the right command
+case "$1" in
+    start)
+        run "procodile start"
+        ;;
+
+    stop)
+        run "procodile stop -s --wait"
+        ;;
+
+    restart)
+        run "procodile restart"
+        ;;
+
+    status)
+        run "procodile status"
+        ;;
+
+    run)
+        export LOG_TO_STDOUT=1
+        run "procodile start -f --no-respawn --stop-when-none"
+        ;;
+
+    upgrade)
+        run "bundle exec rake db:migrate"
+        ;;
+
+    console)
+        run "bundle exec rails console"
+        ;;
+
+    initialize-config)
+        run "bundle exec ruby script/generate_initial_config.rb"
+        ;;
+
+    bundle)
+        if [ -n "$2" ]; then
+          run "bundle install --path=$2 --without=development --jobs=4 --clean"
+        else
+          echo "usage: $0 bundle path/to/vendor/dir"
+          exit 1
+        fi
+        ;;
+
+    version)
+        run "bundle exec ruby script/version.rb"
+        ;;
+
+    *)
+        echo $"Usage: $0 [command]"
+        echo
+        echo "Frequently used commands:"
+        echo -e " * \e[35mstart|stop|restart\e[0m - start/stop/restart Postal in background"
+        echo -e " * \e[35mstatus\e[0m - show the current status of Postal"
+        echo -e " * \e[35mrun\e[0m - run Postal in the foreground"
+        echo -e " * \e[35mversion\e[0m - show the current Postal version"
+        echo
+        echo "Other commands:"
+        echo -e " * \e[35mconsole\e[0m - open a Postal system console (debug only)"
+        echo -e " * \e[35minitialize-config\e[0m - initialize a new config directory"
+        echo -e " * \e[35mupgrade\e[0m - upgrade the Postal installation"
+        echo -e " * \e[35mbundle\e[0m - download & install all required Ruby dependencies"
+        echo
+esac