+##############################
+function check_yum_installed () {
+ package=$1; shift
+ rpm -q $package >& /dev/null || yum -y install $package
+}
+
+# not used apparently
+function check_yumgroup_installed () {
+ group="$1"; shift
+ yum grouplist "$group" | grep -q Installed || { yum -y groupinstall "$group" ; }
+}
+