Hard links and soft links under Linux

"Hard Link"

A hard link is a link through an index node, too complex to see the operation.

Hard-Link creation

[[email protected] ~]# mkdir-p/test/oldboy/Create a directory oldboy/

[[email protected] ~]# cd/test/oldboy/switch to this directory

[email protected] oldboy]# Touch Oldboyfile #创建一个测试文件

Make a hard link

[[Email protected] oldboy]# ln oldboyfile oldboyfile_hard_link//oldboyfile source file Oldboyfile_hard_ Link Hard link file

To view the Inode node number of a file

[[email protected] oldboy]# Ls-li//ls-li View inode node number for each file

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/5B/87/wKiom1UK4g_icujpAADAMjFpoRg135.jpg "title=" 11111111111.png "alt=" Wkiom1uk4g_icujpaadamjfporg135.jpg "/>

Oldboyfile oldboyfile_hard_link Two files have the same inode number, which by default is only one inode node number per file, Here the two same inode numbers indicate that there is a hard link file that is the same as the Inode node number after the file is a hard link file here the oldboyfile_hard_link file is a hard link.

"Soft link"

Types of shortcuts in Windows systems

Creating a soft link

[[email protected] oldboy]# ln-s oldboyfile oldboyfile_soft_link//oldboyfile means file source oldboyfile_soft_link represents a soft link file

To view the Inode node number for the next file

[Email protected] oldboy]# Ls-li

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/5B/87/wKiom1UK4juhRtUgAAD2-RZAwXo839.jpg "title=" 2222222222.png "alt=" Wkiom1uk4juhrtugaad2-rzawxo839.jpg "/>

Although soft links and hard links are theoretically the same file but the node number is different, this is the difference between soft links and hard links

Delete the effect of the original file on hard links and soft links

[Email protected] oldboy]# rm-f oldboyfile

[Email protected] oldboy]# Ls-li

650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/5B/81/wKioL1UK452jqkonAADHij0jSxM425.jpg "title=" 4444. PNG "alt=" wkiol1uk452jqkonaadhij0jsxm425.jpg "/>

View Hard Links

[email protected] oldboy]# cat Oldboyfile_hard_link

This is a test

View Soft Links

[email protected] oldboy]# cat Oldboyfile_soft_link

Cat:oldboyfile_soft_link:No such file or directory

Delete the original file has no effect on the hard link, has effect on the soft link

Note The ln command is not a hard-link to create a directory, but you can create a soft link

This article is from the "Scribbled Life" blog, so be sure to keep this source http://972010.blog.51cto.com/962010/1622389

Hard links and soft links under Linux