harry@MobileOPS:~$ sudo mount /dev/cdrom /tmp/cdrom
[sudo] Passwort für harry: 
mount: mount point /tmp/cdrom does not exist
harry@MobileOPS:~$ ^C
harry@MobileOPS:~$ mkdir /tmp/cdrom 
harry@MobileOPS:~$ sudo mount /dev/cdrom /tmp/cdrom
mount: /dev/sr0 is write-protected, mounting read-only
harry@MobileOPS:~$ ^C
harry@MobileOPS:~$ help mount
bash: help: Auf »mount« trifft kein Hilfethema zu. Probieren Sie »help help«, »man -k mount« oder »info mount«.
harry@MobileOPS:~$ man mount
harry@MobileOPS:~$ sudo mount -r /dev/cdrom /tmp/cdrom
mount: /dev/sr0 is already mounted or /tmp/cdrom busy
       /dev/sr0 is already mounted on /tmp/cdrom
harry@MobileOPS:~$