Linux: mount and umount

Linux: mount and umount simply learn to mount an iso image: mkdir/media/oelmount/dev/cdrom/media/oel uninstall image: umonut/media/oel supplement: umount prompts that device busy is because a program is using the device you detach. For example, your current path may be located at the Mount point of the device, you can use fuser-km/dev/sdb1 (device name) to kill the program that occupies this device before you can uninstall FYI ": [root @ oracle11g/] # mount/dev/cdrom/mediamount: block device/dev/cdrom is write-protected, mounting read-only [root @ oracle11g/] # df Filesystem 1K-blocks Used Available Use % Mounted on/dev/mapper/VolGroup00-LogVol00 14220336 12285584 1200752 92%/dev/sda1 101086 22569 73298/ boottmpfs 219412 0 219412 0%/dev/shm/dev/sr0 3592530 3592530 100%/media [root @ oracle11g/] # [root @ oracle11g repodata] # umount/mediaumount: /media: device is busyumount:/media: device is busy [root @ oracle11g repodata] # pwd/media/repodata [root @ oracle11g repodata] # [root @ oracle11g media] # cd .. [root @ oracle11g/] # pwd/[root @ oracle11g/] # umount/media [root @ oracle11g/] # dfFilesystem 1K-blocks Used Available Use % Mounted on/dev/mapper/VolGroup00-LogVol00 14220336 12285584 1200752 92% // dev/sda1 101086 22569 73298 24%/boottmpfs 219412 0 219412 0%/dev/shm [root @ oracle11g/] #