listen (7)           - listen for a notification
unlisten (7)         - stop listening for a notification
acpi_listen (8)      - ACPI event listener
listen (2)           - listen for connections on a socket
listen (3p)          - listen for socket connections and limit the queue of i...
nc (1)               - arbitrary TCP and UDP connections and listens
probe::linuxmib.ListenDrops (3stap) - Count of times conn request that were d...
probe::linuxmib.ListenOverflows (3stap) - Count of times a listen queue overf...
rtmon (8)            - listens to and monitors RTnetlink