The mtab (mounted file systems table) file is a system information file, commonly found on
Unix-like
A Unix-like (sometimes referred to as UN*X, *nix or *NIX) operating system is one that behaves in a manner similar to a Unix system, although not necessarily conforming to or being certified to any version of the Single UNIX Specification. A Uni ...
systems.
Overview
This file lists all currently
mounted filesystems along with their initialization options.
mtab has a lot in common with
fstab, the distinction being that the latter is a configuration file listing which available filesystems should be mounted on which mount points at boot time, whereas the former lists currently mounted ones, which can include manually mounted ones not listed in fstab. Therefore, mtab is usually in a format similar to that of
fstab. Most of the time it is possible to directly use lines from
mtab in
fstab.
mtab manual page
/ref>
The file commonly resides in /etc/mtab. In some systems it is a symlink to /proc/mounts.
Example
Sample mtab contents:
/dev/sdb1 / ext3 rw,relatime,errors=remount-ro 0 0
proc /proc proc rw,noexec,nosuid,nodev 0 0
/sys /sys sysfs rw,noexec,nosuid,nodev 0 0
varrun /var/run tmpfs rw,noexec,nosuid,nodev,mode=0755 0 0
varlock /var/lock tmpfs rw,noexec,nosuid,nodev,mode=1777 0 0
udev /dev tmpfs rw,mode=0755 0 0
devshm /dev/shm tmpfs rw 0 0
devpts /dev/pts devpts rw,gid=5,mode=620 0 0
lrm /lib/modules/2.6.24-16-generic/volatile tmpfs rw 0 0
securityfs /sys/kernel/security securityfs rw 0 0
gvfs-fuse-daemon /home/alice/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=alice 0 0
See also
* df
* fstab
References
{{Unix commands
Unix file system technology