unix

tail -f /var/log/{messages,kernel,dmesg,syslog}

watch 'dmesg | tail -50'

multitail  

mount linux 

mount -t ext2 /image.img /mnt/image -o loop

mount fat /dos 

mount -t vfat /image.img /mnt/image -o loop 

mount -t debugfs none /sys/kernel/debug