Special Directories and Files

4 important questions on Special Directories and Files

Add the setgid permission numerically (755 org) (add 2000)

Chmod 2775 <file|directory>

Remove the setgid permission symbolically

Chmod g-s <file|directory>

Command ln target link_name

Create hardlinks (target = existing file) (link_name new file)
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Symbolic links /soft link

A file that points to another file

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