device driver

root@KMU-UBUNTU:/work/mod_student# cat /proc/devices 

Character devices:

  1 mem

  4 /dev/vc/0

  4 tty

  4 ttyS

  5 /dev/tty

  5 /dev/console

  5 /dev/ptmx

  5 ttyprintk

  6 lp

  7 vcs

 10 misc

 13 input

 21 sg

 29 fb

 99 ppdev

108 ppp

128 ptm

136 pts

180 usb

189 usb_device

216 rfcomm

226 drm

250 hidraw

251 megaraid_sas_ioctl

252 bsg

253 watchdog

254 rtc

Block devices:

  1 ramdisk

  2 fd

259 blkext

  7 loop

  8 sd

  9 md

 11 sr

 65 sd

 66 sd

 67 sd

 68 sd

 69 sd

 70 sd

 71 sd

128 sd

129 sd

130 sd

131 sd

132 sd

133 sd

134 sd

135 sd

252 device-mapper

253 virtblk

254 mdp

root@KMU-UBUNTU:/work/mod_student# mknod /dev/suji -c 200 1 // make nod -> 연결하는 디바이스 파일의 노드를 만듬

mknod: invalid option -- 'c'

Try `mknod --help' for more information.

root@KMU-UBUNTU:/work/mod_student# mknod /dev/suji c 200 1

root@KMU-UBUNTU:/work/mod_student# ls -l /dev/suji

crw-r--r-- 1 root root 200, 1 May  9 20:20 /dev/suji

root@KMU-UBUNTU:/work/mod_student#