Linux Rookie introduction device related information

Access to devices in Linux

1. Equipment identification

/DEV/XDXN Hard Drive Device/dev/sda1

/dev/cdrom

/dev/mapper/* Virtual Appliance

2. Use of the device

Device Discovery

Fdisk-l viewing real-world devices

Devices that the Cat/proc/partitions system can identify

Blkid system can be mounted using the device

Df-h (h) To see how the device is being used by the system

Use of equipment

①. Mounting of the device

Mount Device mount point

MOUNT/DEV/SDB1/MNT mount the first partition of the second hard drive on the system to the/MNT

②. Uninstalling the device

Umount Equipment | Mount point

if the following conditions occur:

umount:/home/kiosk/desktop/photo:target is busy.

(In some cases useful info about processes, use the device are found by lsof (8) or fuser (1))

Solution:

FUSER-KVM Equipment | Mount Point-K kill,-V show details-m scan device

3. soft and hard link differences must remember

in a storage device, a node points to a storage block, and the presence of a node is similar to the existence of a directory.

A soft link refers to a node of a device that points to another device's node to access a storage block when two different storage visits are exchanged .

A hard link is a node of a device that points directly to another block of storage

Ln-i View File Node number

Ln-s/file/file1 Soft Link

Ln/file/file1 Hard Links

3. File Search

1. Locate filename searches the file database for filename information updatedb update file database

2.find

Find Lookup Location-condition condition value-exec action {} \;

-name

-not conditions

-user

-group

-size

-perm

--maxdepth

--mindepth

-A

-O

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Linux Rookie introduction device related information