Linux view all files corresponding to hard links

In Linux, the link file is divided into hard-link and soft-link file two, where hard links are established through ln source_file dist_file, and soft links are established through Ln-s source_file Dist_file.

The difference between soft and hard links: A hard link is equivalent to a file with two names, and a soft link is equivalent to creating a shortcut to the source

Note: The source file is a file that already exists, and the destination file is the file to be created

Soft link Experiment:

[[email protected] ~]# ll total dosage  22024-rw-------.   1 root root      1311 9 Month   29 04:14 anaconda-ks.cfgdrwxr-xr-x. 18  501   501     4096 10 month  30 21:29 python-3.6.1-rw-r--r--.   1 root root 22540566 3 Month   21 2017 python-3.6.1.tgz[[email  protected] ~]# ln -s anaconda-ks.cfg anaconda-ks.cfg.ln [[email  Protected] ~]# ll Total dosage  22024-rw-------.   1 root root      1311 9 Month   29 04:14 anaconda-ks.cfglrwxrwxrwx.  1 root root        15 11 Month  16 23:13 anaconda-ks.cfg.ln ->  anaconda-ks.cfgdrwxr-xr-x. 18  501  501     4096  October  30 21:29  Python-3.6.1-rw-r--r--.   1 root root 22540566 3 Month   21 2017  python-3.6.1.tgz[[email protected] ~]#

Soft links can be seen through the ls-l command of the soft link file, the identification is the target point to the source file, as defined by LN is the opposite.

Hard-Link experiments:

[[email protected] ~]# ll total dosage  22024-rw-------.   1 root root      1311 9 Month   29 04:14 anaconda-ks.cfglrwxrwxrwx.  1 root  root       15 11 Month  16 23:13 ANACONDA-KS.CFG.LN  -> anaconda-ks.cfgdrwxr-xr-x. 18  501  501      4096 10 Moon  30 21:29 python-3.6.1-rw-r--r--.   1 root root  22540566 3 Month   21 2017 Python-3.6.1.tgz[[email protected] ~]# ln  Anaconda-ks.cfg anaconda-ks.cfg.hln[[email protected] ~]# ls -l Total Dosage  22028- RW-------.   2 root root     1311 9 Month   29 04:14  ANACONDA-KS.CFG-RW-------.   2 root root     1311 9 Month   29 04:14 anaconda-ks.cfg.hlnlrwxrwxrwx.  1 root root       15  November  16 23:13 anaconda-ks.cfg.ln -> anaconda-ks.cfgdrwxr-xr-x. 18   501  501     4096 10 month  30 21:29 python-3.6.1-rw-r--r--.   1 root root 22540566 3 Month   21 2017 python-3.6.1.tgz[[email  protected] ~]#

You can see which file the hard link to anaconda-ks.cfg cannot see through Ls-l , and only see that the hard link count becomes 2.

We can find another hard-link file for anaconda-ks.cfg through the inode.

[Email protected] ~]# ls -il total dosage  2202833582147 -rw-------.   2 root  root     1311 9 Month   29 04:14 anaconda-ks.cfg33582147  -RW-------.   2 root root     1311 9 Month   29  04:14 anaconda-ks.cfg.hln33582167 lrwxrwxrwx.  1 root root        15 11 Month  16 23:13 anaconda-ks.cfg.ln ->  anaconda-ks.cfg50716171 drwxr-xr-x. 18  501  501      4096 10 month  30 21:29 python-3.6.134101767 -rw-r--r--.   1 root root  22540566 3 Month   21 2017 python-3.6.1.tgz[[email protected] ~]# find  / -inum 33582147/root/anaconda-ks.cfg/root/anaconda-ks.cfg.hln[[email protected] ~]#

Note: Soft links can span file systems (partitions) and hard links are not available.

This article is from the "Night" blog, please be sure to keep this source http://liuqun.blog.51cto.com/3544993/1982654

Linux view all files corresponding to hard links