/lib/udev/rules.d/50-udev-default.rules is in udev 175-0ubuntu9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | # do not edit this file, it will be overwritten on update
KERNEL=="pty[pqrstuvwxyzabcdef][0123456789abcdef]", GROUP="tty", MODE="0660"
KERNEL=="tty[pqrstuvwxyzabcdef][0123456789abcdef]", GROUP="tty", MODE="0660"
KERNEL=="ptmx", GROUP="tty", MODE="0666"
KERNEL=="tty", GROUP="tty", MODE="0666"
KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
KERNEL=="vcs|vcs[0-9]*|vcsa|vcsa[0-9]*", GROUP="tty"
# serial
KERNEL=="tty[A-Z]*[0-9]|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*", GROUP="dialout"
KERNEL=="mwave", GROUP="dialout"
KERNEL=="hvc*|hvsi*", GROUP="dialout"
# virtio serial / console ports
KERNEL=="vport*", ATTR{name}=="?*", SYMLINK+="virtio-ports/$attr{name}"
# mem
KERNEL=="null|zero|full|random|urandom", MODE="0666"
KERNEL=="mem|kmem|port|nvram", GROUP="kmem", MODE="0640"
# input
SUBSYSTEM=="input", ENV{ID_INPUT}=="", IMPORT{builtin}="input_id"
KERNEL=="mouse*|mice|event*", MODE="0640"
KERNEL=="ts[0-9]*|uinput", MODE="0640"
KERNEL=="js[0-9]*", MODE="0644"
# video4linux
SUBSYSTEM=="video4linux", GROUP="video"
KERNEL=="vttuner*", GROUP="video"
KERNEL=="vtx*|vbi*", GROUP="video"
KERNEL=="winradio*", GROUP="video"
# graphics
KERNEL=="agpgart", GROUP="video"
KERNEL=="pmu", GROUP="video"
KERNEL=="nvidia*|nvidiactl*", GROUP="video"
SUBSYSTEM=="graphics", GROUP="video"
SUBSYSTEM=="drm", GROUP="video"
# sound
SUBSYSTEM=="sound", GROUP="audio", \
OPTIONS+="static_node=snd/seq", OPTIONS+="static_node=snd/timer"
# DVB (video)
SUBSYSTEM=="dvb", GROUP="video"
# FireWire (firewire-core driver: IIDC devices, AV/C devices)
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x00010*", GROUP="video"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00b09d:0x00010*", GROUP="video"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x010001*", GROUP="video"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x014001*", GROUP="video"
# 'libusb' device nodes
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", MODE="0664"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", IMPORT{builtin}="usb_id"
# printer
KERNEL=="parport[0-9]*", GROUP="lp"
SUBSYSTEM=="printer", KERNEL=="lp*", GROUP="lp"
SUBSYSTEM=="ppdev", GROUP="lp"
KERNEL=="lp[0-9]*", GROUP="lp"
KERNEL=="irlpt[0-9]*", GROUP="lp"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ENV{ID_USB_INTERFACES}=="*:0701??:*", GROUP="lp"
# block
SUBSYSTEM=="block", GROUP="disk"
# floppy
SUBSYSTEM=="block", KERNEL=="fd[0-9]", GROUP="floppy"
# cdrom
SUBSYSTEM=="block", KERNEL=="sr[0-9]*", GROUP="cdrom"
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="4|5", GROUP="cdrom"
KERNEL=="pktcdvd[0-9]*", GROUP="cdrom"
KERNEL=="pktcdvd", GROUP="cdrom"
# tape
KERNEL=="ht[0-9]*|nht[0-9]*", GROUP="tape"
KERNEL=="pt[0-9]*|npt[0-9]*|pht[0-9]*", GROUP="tape"
SUBSYSTEM=="scsi_generic|scsi_tape", SUBSYSTEMS=="scsi", ATTRS{type}=="1|8", GROUP="tape"
# block-related
KERNEL=="sch[0-9]*", GROUP="disk"
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="0", GROUP="disk"
KERNEL=="pg[0-9]*", GROUP="disk"
KERNEL=="qft[0-9]*|nqft[0-9]*|zqft[0-9]*|nzqft[0-9]*|rawqft[0-9]*|nrawqft[0-9]*", GROUP="disk"
KERNEL=="rawctl", GROUP="disk"
SUBSYSTEM=="raw", KERNEL=="raw[0-9]*", GROUP="disk"
SUBSYSTEM=="aoe", GROUP="disk", MODE="0220"
SUBSYSTEM=="aoe", KERNEL=="err", MODE="0440"
# network
KERNEL=="tun", MODE="0666", OPTIONS+="static_node=net/tun"
KERNEL=="rfkill", MODE="0644"
# CPU
KERNEL=="cpu[0-9]*", MODE="0444"
KERNEL=="fuse", ACTION=="add", MODE="0666", OPTIONS+="static_node=fuse"
SUBSYSTEM=="rtc", DRIVERS=="rtc_cmos", SYMLINK+="rtc"
KERNEL=="mmtimer", MODE="0644"
KERNEL=="rflash[0-9]*", MODE="0400"
KERNEL=="rrom[0-9]*", MODE="0400"
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