Use plain POSIX shell syntax to match ".yml" configuration file names.
This is also slightly more correct, as it matches ".yml" only at the
*end* of the file name.
fi
# define ejabberd environment parameters
-if [ "$EJABBERD_CONFIG_PATH" != "${EJABBERD_CONFIG_PATH/.yml/}" ] ; then
+if [ "$EJABBERD_CONFIG_PATH" != "${EJABBERD_CONFIG_PATH%.yml}" ] ; then
rate=$(grep log_rate_limit $EJABBERD_CONFIG_PATH | cut -d':' -f2 | sed 's/ *//')
rotate=$(grep log_rotate_size $EJABBERD_CONFIG_PATH | cut -d':' -f2 | sed 's/ *//')
count=$(grep log_rotate_count $EJABBERD_CONFIG_PATH | cut -d':' -f2 | sed 's/ *//')