$OpenBSD$
--- examples/data/scripts/instance-select-wmii.sh.orig	Sat Apr 28 20:27:17 2012
+++ examples/data/scripts/instance-select-wmii.sh	Wed Nov 21 18:38:07 2012
@@ -35,7 +35,7 @@ case "$1" in
         ;;
     "prev")
         current="$( wmiir read /client/sel/ctl | head -n 1 )"
-        prev="$( wmiir read /tag/sel/index | grep -B 10000 " $current " | tac | grep -m 1 uzbl | cut -d ' ' -f 2 )"
+        prev="$( wmiir read /tag/sel/index | grep -B 10000 " $current " | tail -r | grep -m 1 uzbl | cut -d ' ' -f 2 )"
         if [ -n "$prev" ]; then
             wmiir xwrite /tag/sel/ctl "select client $prev"
         fi