ぐはぁ、
[root@mona root]# mkinitrd /boot/initrd-2.6.23-0vl0.4.img 2.6.23-0vl0.4
/sbin/mkinitrd: line 701: conditional binary operator expected
/sbin/mkinitrd: line 701: syntax error near `=~'
/sbin/mkinitrd: line 701: ` if [[ "$module" =~ ".hci[_-]hcd" ]]; then'