Shulou(Shulou.com)06/03 Report--

Partition-> create file system (formatted)

File system management

Recreating the file system will damage the original file

Fdisk / dev/sda

You can't delete it inside, just press ctrl+Backspace.

Partprobe / dev/sda only detects this one

Mkfs: make file system

-t FSTYPE mkfs-t ext2 / dev/sda5

Mkfs-t ext2 = mkfs.ext2

Mkfs-t ext3 = mkfs.ext3

Mkfs-t vfat = mkfs.vfat

Specializes in managing ext series file systems

Mke2fs

-j:ext3 creates ext3 type file system mke2fs-j / dev/sda5

-b BLOCK_SIZE: specifies the block size. The default is 4096. Available values are 1024 and 4096.

Mke2fs-b 2048-j / dev/sda5

-L LABEL: specify the partition volume label mke2fs-L MYDATA7 / dev/sda5

-m #: specifies that the percentage of blocks reserved for superusers is mke2fs-m 3 / dev/sda5

-I #: used to create an inode that specifies the number of bytes of space. The default is 8192, where

The given value should be 2 ^ n times the block size.

Mke2fs-I 4096 / dev/sda5

-N #: specify the number of inode

-F: force the creation of a file system

Blkid queries or views the properties of a disk device

Display or locate the properties of the block device

Blkid / dev/sda5

UUID TYPE LABEL

E2label is used to view or define volume labels

E2label device file volume label; set volume label

E2label / dev/sda5

E2label / dev/sda5 MYRR

Tune2fs adjusts the relevant properties of the file system:

Upgrade ext2 to ext3 tune2fs-j / dev/sda5 without harming the original data

-L LABEL: set or modify the volume label tune2fs-L MYDATA / dev/sda5

-m #: adjust the reservation percentage

-r #: specify the number of reserved blocks

-o: set default mount options

Acl

-c #: self-test is performed after the specified number of mounts reaches #; 0 or-1 turns off this feature

-I #: self-test after how many days per mount; turn off this feature for 0 or-1

-l: displays the information in the super block

Dumpe2fs: displaying file system attribute information

-h: displays only super block information df-lh

Dumpe2fs / dev/vol0/root

Fsch detects and repairs the Linux file system

-t FSTYPE: specifies the file system type

-a: automatic repair, will not be asked

E2fsch: designed to repair ext2 and ext3 file systems

-f: mandatory inspection

-p: automatic repair

File system type:

Ext2

Ext3

Check which file systems are supported by the current system

Cat / proc/filesystems

If you want to use a partition, you must mount it.

Mount: associate a new file system to the current root file system

Unmount: removes the association between a file system and the current root file system

Mount: mounting

Mount device mount point

Equipment:

Device file / dev/sda5

Volume label: LABEL = ""

UUID: UUID = ""

Mount point: directory

Request:

1. This directory is not used by other processes

2. The directory must exist in advance.

3. The original files in the directory will be temporarily hidden

Mount: displays the devices and mount points that have been mounted on the current system (without parameters)

Mount [option] [- o option] DEVICE MOUNT_POINT

Options for the mount command functional options for mounting file systems

-a: represents all file systems defined in the mount / etc/fstab file

-n: by default, the mount command mounts a device every time it is mounted

Save the information to / etc/mtab file: using the-n option means that when the device is mounted

Do not write information to this file

-t FSTYPE: specify the type of file system being mounted on the device, do not use this option

Mount calls the blkid command to get the type of the corresponding file system

-r: this option is often used for read-only mount CDs

-W: read write mount

-o: specify additional mount options, that is, properties that are enabled by the file system

Remount: remount the current file system

Ro; mount is read-only

Rw: read write mount

Remount: mount-o remount,ro / dev/sda5 (do not specify mount point)

After the mount is complete, access the files on the corresponding file system through the mount point

Mount / dev/sda5 / mnt/test/

Umount: unmount a file system

Umount equipment

Umount mount point

Uninstall consideration

1. The mounted device is not used by processes.

2 、

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