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diff --git a/indra/viewer_components/updater/scripts/linux/xmenity b/indra/viewer_components/updater/scripts/linux/xmenity
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+#!/bin/bash
+
+# @file   xmenity
+# @author Nat Goodspeed
+# @date   2013-01-09
+# @brief  Provide progress UI for bash scripts (e.g. update_install) using
+#         zenity if available, xmessage if not.
+# 
+# $LicenseInfo:firstyear=2013&license=viewerlgpl$
+# Copyright (c) 2013, Linden Research, Inc.
+# $/LicenseInfo$
+
+# This script invokes either zenity --progress or, if zenity is unavailable,
+# wraps xmessage in a zenity-like interface. That is its mutant power.
+# Pass $1 as the title for your zenity box. It is ignored by xmessage.
+# Send updates on stdin:
+# A line containing only a decimal integer from 0 - 100 sets that progress.
+# End with 100 to tell zenity to terminate.
+# A line starting with '#' replaces the progress text.
+# All other stdin lines are ignored.
+
+zenpath="$(which zenity)"
+if [ -n "$zenpath" -a -x "$zenpath" ]
+then # if executable zenity is on PATH, run that instead of this.
+     exec "$zenpath" --progress --title="$1" --auto-close --width=320 --height=120
+fi
+
+# Arriving here means we don't have zenity available. The remainder of this
+# script is the xmessage wrapper.
+
+# We operate by leaving one background xmessage process running. This is the
+# pid of that process.
+xmpid=""
+
+function clear_message {
+    [ -n "$xmpid" ] && kill $xmpid
+    xmpid=""
+}
+
+# Cancel any pending xmessage, regardless of how we exit.
+trap 'clear_message' EXIT
+
+while read line
+do # terminate like zenity --progress
+   [ "$line" == "100" ] && break
+   # ignore everything but replacement text
+   nohash="${line#'#'}"
+   # if stripping leading hash doesn't change line, it doesn't have one
+   [ "$nohash" == "$line" ] && continue
+   # clear any previous message
+   clear_message
+   # put up a new xmessage and capture its pid
+   xmessage -buttons OK:2 -center "$nohash" &
+   xmpid=$!
+done