What is an absolute path ?

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A path is absolute when it starts with a root (prefix).

It contains all the information needed to locate the file.

Inside a file system, the absolute path is the file identifier.

Example of an absolute path vs a relative path

Absolute path:

/home/username/readme

This is an absolute path because it starts with a forward slash /. This character is the root character on a Linux system.

Relative path:

The below path is a relative path because it does not start with any prefix (root) character

username/readme