How to compare specific files?

To compare specific files using the diff command, you can simply specify the paths of the two files you want to compare. Here’s how to do it:

Syntax

diff file1.txt file2.txt

Example

If you have two files named file1.txt and file2.txt, you can compare them like this:

diff /path/to/file1.txt /path/to/file2.txt

Output

The output will show the differences between the two files:

• Lines that are present in file1.txt but not in file2.txt will be preceded by <.
• Lines that are present in file2.txt but not in file1.txt will be preceded by >.

For example, the output might look like this:

2c2
< This is a line in file1
---
> This is a line in file2

This indicates that line 2 of file1.txt needs to be changed to match line 2 of file2.txt.

Additional Options

You can use various options with diff to customize the output:

• -u: Show unified format, which provides context around the differences.
• -i: Ignore case differences.
• -w: Ignore all white space.

Example with Options

To compare two files and show the differences in unified format:

diff -u file1.txt file2.txt

This will give you a more readable output, showing the differences along with a few lines of context.