% ls /sys/class/net/eth0/ address carrier features ifindex mtu statistics type addr_len dev_id flags iflink operstate subsystem uevent broadcast dormant ifalias link_mode power tx_queue_len
% ls /sys/class/ net/eth0/
address carrier features ifindex mtu statistics type
addr_len dev_id flags iflink operstate subsystem uevent
broadcast dormant ifalias link_mode power tx_queue_len