Detect if the server is a Linux-VServer host.
#!/bin/sh
# Test the proc
TEST=`cat /proc/self/status|grep s_context| cut -d":" -f2|cut -d" " -f 2`
case "$TEST" in
"")
# Not a vserver kernel
echo group:host
;;
"0")
# Vserver kernel but it is the HOST
echo group:host
;;
[0-9]*)
# Vserver
echo group:vserver
;;
esac