キャラクタ・デバイスの実行

[root@gabin 10]# insmod hello.o
Warning: loading hello.o will taint the kernel: no license
  See http://www.tux.org/lkml/#export-tainted for information about tainted modules
Module hello loaded, with warnings
[root@gabin 10]# tail -3 /var/log/messages 
Oct  9 04:48:11 gabin sshd(pam_unix)[3717]: session closed for user take
Oct  9 04:52:53 gabin kernel: LKM-hello: Hello
Oct  9 04:52:53 gabin kernel: LKM-hello: major=121
[root@gabin 10]# cat > /dev/hello
1
2
1
[root@gabin 10]# tail -6 /var/log/messages
Oct  9 04:53:25 gabin kernel: LKM-hello:open minor=0
Oct  9 04:53:25 gabin kernel: LKM-hello0 ioctl, cmd: 0x5401, arg: 0xbfff2890
Oct  9 04:53:25 gabin kernel: LKM-hello0 ioctl, cmd: 0x5401, arg: 0xbfff3890
Oct  9 04:53:28 gabin kernel: LKM-hello:write minor=0
Oct  9 04:53:31 gabin last message repeated 2 times
Oct  9 04:53:33 gabin kernel: LKM-hello:release minor=0
[root@gabin 10]#