/dev/full : always full device

small tips.

You can check how your program handles disk-full errors by using /dev/full device.

from man manual.

root@ubuntu:~# man full DESCRIPTION       File /dev/full has major device number 1 and minor device number 7.       Writes to the /dev/full device will fail with an  ENOSPC  error.   This       can be used to test how a program handles disk-full errors.       Reads from the /dev/full device will return \0 characters.       Seeks on /dev/full will always succeed.

sample usage.

root@ubuntu:~# tail -1 /etc/lsb-release ;uname -ri DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS" 3.13.0-24-generic x86_64 root@ubuntu:~# echo hello > /dev/full -su: echo: write error: No space left on device root@ubuntu:~# echo $? 1 root@ubuntu:~# root@ubuntu:~# echo hello > /dev/null root@ubuntu:~# echo $? 0

I didn’t know that..