How do you use patch command with an example?

The patch command in Linux is used to apply changes to text files based on the differences captured in a diff file. It is commonly used for updating source code or applying fixes to files in software development.

Example of Using the `patch` Command

Suppose you have a source file called example.txt and a corresponding patch file example.patch, which contains the differences you want to apply. Here’s how you can use the patch command to apply those changes:

In this example, the `patch` command reads the example.patch file and applies its contents to the example.txt file, modifying it accordingly.