Linux command: Mount Mount with uninstall Umount

Mount: Associates a new file system to the current root filesystem;

Uninstall: The association between a file system and the current root file system is removed;

Mount/umount Introduction to Commands:

Mount Associates the new file system to the current root file system and directly enters mount to display the currently mounted file system.

Umount the association between a file system and the current root filesystem is removed;

1 . Command format:

Mount: Mount

Format: Mount device mount point Usage:mount/dev/sda5/mnt/test

Equipment:

Device file:/dev/sda5

Volume Label: label= ""

Uuid:uuid= ""

mount point: Directory

Requirements:

1, this directory is not used by other processes;

2, the catalogue must exist beforehand;

3, the original files in the directory will be temporarily hidden;

When the mount is complete, the files on the corresponding file system are accessed by the mount point.

Direct Input mount: Displays the devices and mount points that are currently mounted on the system;

[email protected] test]# mount

/dev/sda2 on/type ext4 (rw)

Proc On/proc type proc (rw)

Sysfs On/sys type SYSFS (rw)

Devpts on/dev/pts type devpts (rw,gid=5,mode=620)

Tmpfs on/dev/shm type Tmpfs (rw,rootcontext= "System_u:object_r:tmpfs_t:s0")

/DEV/SDA1 on/boot type EXT4 (rw)

/dev/sda3 on/home type EXT4 (rw)

/DEV/SDA7 on/tmp type EXT4 (rw)

/dev/sda5 on/usr type EXT4 (rw)

None On/proc/sys/fs/binfmt_misc type Binfmt_misc (rw)

Umount: Uninstalling a file system

Format: Umount device or umount mount point usage:umount/dev/sda5 or Umount/mnt/test

Uninstall considerations:

The mounted device is not being used by the process, otherwise it cannot be uninstalled.

2 . Command function:

Mount associates a new file system mount to the current root file system, or displays a file system that is currently mounted

Umount The association between a file system and the current root filesystem is removed;

3 . Command parameters:

mount [Options] [-o options] device Mount_point

-A: Indicates that all file systems defined in the/etc/fstab file are mounted

-N: By default, the Mount command saves the mounted device information to/etc/mtab for each device mounted

The use of the-N option means that information is not written to the file when the device is mounted;

-T Fstype (file type): Specifies the type of file system that is being mounted on the device; When you do not use this option, mount

Call the Blkid command to obtain the type of the corresponding file system;

-R: Read-only Mount

-W: Read-write mount, if the mounted device does not support write operation, mount directly as read.

-O: Specifies the additional mount option, which specifies the properties that are enabled by the file system.

Remount: Re-mount the current file system

RO: Mount as read-only

RW: Mount for read-write

Nosuid: Disable setting Suid

4 . Command instance:

1, Mount/dev/sda5/mnt/test

2. Mount-o Remount,ro/dev/sda5 re-mount and mount as read-only

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Linux command: Mount Mount with uninstall Umount