> # for d in /sys/block/*; do sfx=""; [ -e "$d/mq" ] && sfx=" [mq]"; echo > "$d$sfx"; done > /sys/block/loop0 [mq] > /sys/block/loop1 [mq] > /sys/block/loop2 [mq] > /sys/block/loop3 [mq] > /sys/block/loop4 [mq] > /sys/block/loop5 [mq] > /sys/block/loop6 [mq] > /sys/block/loop7 [mq] > /sys/block/sda > /sys/block/sdb > /sys/block/sdc > /sys/block/sr0
> # for d in /sys/block/*; do sfx=""; [ -e "$d/mq" ] && sfx=" [mq]"; echo
> "$d$sfx"; done
> /sys/block/loop0 [mq]
> /sys/block/loop1 [mq]
> /sys/block/loop2 [mq]
> /sys/block/loop3 [mq]
> /sys/block/loop4 [mq]
> /sys/block/loop5 [mq]
> /sys/block/loop6 [mq]
> /sys/block/loop7 [mq]
> /sys/block/sda
> /sys/block/sdb
> /sys/block/sdc
> /sys/block/sr0