Master Linux Paths: Absolute vs Relative Explained with Real Examples

In Linux, a path is the reference to a file or directory, composed of names separated by slashes. The leading slash ("/") denotes the root directory, while subsequent slashes act as separators. /home/abhishek/scripts is an example of a path.

System users use paths to locate files or to tell commands and scripts where a file resides, e.g. cat /home/abhishek/scripts/my_script.sh.

Absolute Paths

An absolute path always starts from the root directory ( /). Example:

/home/abhishek/scripts/my_scripts.sh

Relative Paths

A relative path starts from the current working directory. If you are in /home and want to access my_script.sh, the path is:

abhishek/scripts/my_scripts.sh

Using ls -l with an absolute path: ls -l /home/abhishek/scripts/my_script.sh Using ls -l with a relative path: ls -l scripts/my_script.sh Both commands produce the same file information; only the path syntax differs.

Special Relative Notations

. (single dot) – refers to the current directory.

.. (double dot) – refers to the parent directory (one level up).

To move from the abhishek directory to prakash you can use:

Absolute: cd /home/prakash Relative: cd ../prakash The .. tells cd to go up one level to /home before entering prakash.

Absolute paths are independent of the current location, while relative paths depend on it.

When to Use Which

If you are deep in a directory tree and need to move up or down a few levels, relative paths are shorter and easier to type. Conversely, when navigating across unrelated parts of the filesystem (e.g., from /home/username/project/src to /usr/bin), an absolute path avoids long chains of ../ components.

In scripts, use absolute paths when the location is fixed; use relative paths when the script may be moved or when you want it to work regardless of the installation directory.

Note: Linux filenames are case‑sensitive and may contain letters, numbers, dots, hyphens, underscores, and most characters except the slash, which is reserved as a separator.