Linux system hard link and symbolic link summary __linux

Hard Links:

1. The same I node, through the number of links to the I node to determine the number of shares.

2. When you delete a file, the number of links-1 until the number of links is 0 before you delete the file.

3. Since 1., with the same I node, it means that there is only one file (Linux a file has a unique I node), save space.

4. It must be available under the same file system.

Symbolic Link:

1. When sharing, create a new I node, and save the absolute pathname of the shared file to access.

2. Delete the file, if the shared file, all the symbolic link file is invalid, if not, only delete the symbolic link file.

3. Can be used in different file systems.