From: Andre Noll <maan@systemlinux.org>
Date: Sat, 25 Sep 2010 16:56:25 +0000 (+0200)
Subject: gsu: Error out if not running as bash-4.
X-Git-Url: http://git.tuebingen.mpg.de/?p=gsu.git;a=commitdiff_plain;h=1b07e7d284a5147c8002340477051c3a78a08858

gsu: Error out if not running as bash-4.
---

diff --git a/funcs/gsu b/funcs/gsu
index b409bc5..cef33b2 100644
--- a/funcs/gsu
+++ b/funcs/gsu
@@ -389,6 +389,16 @@ gsu()
 {
 	local i
 
+	gsu_is_a_number "${BASH_VERSINFO[0]}"
+	if [[ $ret -lt 0 ]]; then
+		gsu_msg "fatal: failed to determine bash version"
+		exit 1
+	fi
+
+	if [[ "${BASH_VERSINFO[0]}" -lt 4 ]]; then
+		gsu_msg "fatal: This script requires at least bash 4.0"
+		exit 1
+	fi
 	_gsu_self="$(basename $0)"
 	gsu_name="${gsu_name:=$_gsu_self}"
 	gsu_config_var_prefix="${gsu_config_var_prefix:=$gsu_name}"