Contents
What is the etc mtab?
/etc/mtab is a created by the system. It contains a list of currently mounted devices. The format of the files is similar. After mounting a new device, copy the relevant line from /etc/mtab to /etc/fstab so that it will be auto-mounted after boot or when calling mount -a .
What is mtab used for?
mtab lists currently mounted file systems and is used by the mount and unmount commands when you want to list your mounts or unmount all. It’s not used by the kernel, which maintains its own list (in /proc/mounts or /proc/self/mounts ). Its structure is the same as fstab (see manpage).
Can we edit etc mtab?
3 Answers. File /etc/mtab is maintained by the operating system. Don’t edit it. File /etc/fstab defines what should be mounted.
How do you make etc fstab?
Creating the /etc/fstab File. Replace , , and with the values appropriate for the system, for example, sda2 , sda5 , and ext4 . For details on the six fields in this file, see man 5 fstab.
What does etc fstab do?
The /etc/fstab file is a system configuration file that contains all available disks, disk partitions and their options. Each file system is described on a separate line. The /etc/fstab file is used by the mount command, which reads the file to determine which options should be used when mounting the specified device.
What is etc fstab used for?
The fstab (/etc/fstab) (or file systems table) file is a system configuration file on Debian 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.
What are the entries in etc fstab?
Each entry line in the fstab file contains six fields, each one of them describes a specific information about a filesystem.
- First field – The block device.
- Second field – The mountpoint.
- Third field – The filesystem type.
- Fourth field – Mount options.
- Fifth field – Should the filesystem be dumped ?
- Sixth field – Fsck order.
How to understand the / etc / MTAB file format?
The /etc/mtab file is the list of mounted file systems it is maintained by the mount and unmount programs. It’s format is similar to the fstab file The columns arw device the device or remote filesystem that is mounted. mountpoint the place in the filesystem the device was mounted. filesystemtype the type of filesystem mounted.
What’s the difference between / etc / MTAB and / Proc?
When the proc filesystem is mounted (say at /proc ), the files /etc/mtab and /proc/mounts have very similar contents. The former has somewhat more information, such as the mount options used, but is not necessarily up-to-date.
Can You mount a MTAB file in Linux?
This real mtab file is still supported, but on current Linux systems it is better to make it a symlink to /proc/mounts instead, because a regular mtab file maintained in userspace cannot reliably work with namespaces, containers and other advanced Linux features. Mount without writing in /etc/mtab.
When do you Mount partitions in / etc / MTAB?
In /etc/mtab, however, this two options loose their sense. Indeed, these two options are used when mounting the partitions, and /etc/mtab lists the partitions that are already mounted.