$ ls /dev
acpi            apm             ctty            dsp0.1          fido            kbd2            net             nvidia0         ptyp3           ttyd0.lock      ttyv4           ttyvd           urandom
ad4             ata             cuad0           dsp0.2          fw0             kbdmux0         net1            nvidia1         random          ttyp0           ttyv5           ttyve           usb
ad4s1           atkbd0          cuad0.init      dsp0.p0         fw0.0           klog            net2            nvidiactl       sndstat         ttyp1           ttyv6           ttyvf           usb0
ad4s1a          audio0.0        cuad0.lock      dsp0.r0         fwmem0          kmem            net3            pass0           stderr          ttyp2           ttyv7           ugen0           usb1
ad4s1b          audio0.1        da0             dsp0.v0         fwmem0.0        log             net4            pass1           stdin           ttyp3           ttyv8           ugen0.1         xpt0
ad4s1c          audio0.2        da1             dspW0.0         geom.ctl        mdctl           network         pci             stdout          ttyv0           ttyv9           ukbd0           zero
ad4s1d          bpf0            devctl          dspW0.1         io              mem             nfs4            ptyp0           sysmouse        ttyv1           ttyva           ulpt0
ad4s1e          console         devstat         dspW0.2         kbd0            midistat        nfslock         ptyp1           ttyd0           ttyv2           ttyvb           ums0
ad4s1f          consolectl      dsp0.0          fd              kbd1            mixer0          null            ptyp2           ttyd0.init      ttyv3           ttyvc           unlpt0