Meng New Linux Learning Road (13) access to devices in--linux

First, device access

/DEV/XDXN #硬盘设备/dev/sda1

/dev/cdrom #光驱

/dev/mapper/* #虚拟设备

Second, the use of equipment

fdisk-l # #查看真实存在的设备

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blkid # #系统能够挂载使用的设备id 650) this.width=650; "Src=" Https://s5.51cto.com/wyfs02/M02/91/1F/wKiom1j0NReTgAom Aaehr9xfvcc089.png "title=" screenshot from 2017-04-16 22-09-23.png "alt=" Wkiom1j0nretgaomaaehr9xfvcc089.png "/>

DF # #查看设备被系统使用的情况

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Second, the use of equipment

1. Mounting of the device

Mount Device mount point

Mount/dev/sdb1/mnt #把系统中第二块硬盘的第一个分区挂载到 the/mnt directory

2. Uninstalling the device

Umount Equipment | mount point

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If a situation arises:

[Email protected]]# UMOUNT/DEV/SDB1

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

(In some cases userful info about processes

The device is found by lsof (8) or fuser (1))

Solve:

FUSER-KVM Device | mount point-K kill,-V show details,-m scan device

Third, soft and hard links

Ls-l # #查看文件节点号

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Ln-s/file/file # #软连接

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Ln/file/file # #硬链接

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Iv. File Search

1. Locate filename # #在文件数据库中搜索filename信息, 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

-type F File

Catalog D

C-Character device

B Fast Equipment

s socket

L Link

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DD If=/dev/zero of=/mnt/file1 bs=1024 count=100

DD If=/dev/zero of=/mnt/file2 bs=1024 count=200

DD If=/dev/zero of=/mnt/file3 bs=1024 count=300

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Meng New Linux Learning Road (13) access to devices in--linux