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5.9.3.2. Seeing What is Mounted
In addition to mounting and unmounting disk space, it is possible to see what is mounted. There are several different ways of doing this:
- Viewing
/etc/mtab - Viewing
/proc/mounts - Issuing the
dfcommand
5.9.3.2.1. Viewing /etc/mtab
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The file
/etc/mtab is a normal file that is updated by the mount program whenever file systems are mounted or unmounted. Here is a sample /etc/mtab:
/dev/sda3 / ext3 rw 0 0 none /proc proc rw 0 0 usbdevfs /proc/bus/usb usbdevfs rw 0 0 /dev/sda1 /boot ext3 rw 0 0 none /dev/pts devpts rw,gid=5,mode=620 0 0 /dev/sda4 /home ext3 rw 0 0 none /dev/shm tmpfs rw 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
/dev/sda3 / ext3 rw 0 0 none /proc proc rw 0 0 usbdevfs /proc/bus/usb usbdevfs rw 0 0 /dev/sda1 /boot ext3 rw 0 0 none /dev/pts devpts rw,gid=5,mode=620 0 0 /dev/sda4 /home ext3 rw 0 0 none /dev/shm tmpfs rw 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0 Note
The
/etc/mtab file is meant to be used to display the status of currently-mounted file systems only. It should not be manually modified.
Each line represents a file system that is currently mounted and contains the following fields (from left to right):
- The device specification
- The mount point
- The file system type
- Whether the file system is mounted read-only (
ro) or read-write (rw), along with any other mount options - Two unused fields with zeros in them (for compatibility with
/etc/fstab[24])
[24]
Refer to Section 5.9.5, “Mounting File Systems Automatically with
/etc/fstab” for more information.
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