Mtab
Encyclopedia
The mtab file is a system information file, commonly found on Unix-like
systems. This file lists all currently mounted filesystems
along with their initialization options. mtab has a lot in common with fstab
, the main distinction being that the latter lists all available filesystems whereas the former lists only currently mounted ones. 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.
The file commonly resides in /etc/mtab.
Sample mtab contents:
Unix-like
A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
systems. This file lists all currently mounted filesystems
Mount (Unix)
The Unix command line utility mount instructs the operating system that a file system is ready to use, and associates it with a particular point in the system's file system hierarchy . The counterpart umount instructs the operating system that the file system should be disassociated from its mount...
along with their initialization options. mtab has a lot in common with fstab
Fstab
The fstab file is a system configuration file commonly found on Unix systems. The fstab file typically lists all available disks and disk partitions, and indicates how they are to be initialized or otherwise integrated into the overall system's file system...
, the main distinction being that the latter lists all available filesystems whereas the former lists only currently mounted ones. Therefore mtab is usually in a format similar to that of fstab
Fstab
The fstab file is a system configuration file commonly found on Unix systems. The fstab file typically lists all available disks and disk partitions, and indicates how they are to be initialized or otherwise integrated into the overall system's file system...
. Most of the time it is possible to directly use lines from mtab in fstab.
The file commonly resides in /etc/mtab.
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