How to read diff output?

Reading diff output involves understanding the format used to indicate changes between two files. Here's a concise guide:

1. Line Indicators:

   • Lines starting with < show content from the first file.
   • Lines starting with > show content from the second file.

2. Change Indicators:

   • c: Indicates a change. For example, 1c1 means line 1 in the first file has been changed to line 1 in the second file.
   • a: Indicates lines that have been added. For example, 2a3 means line 2 in the first file has a new line added at line 3 in the second file.
   • d: Indicates lines that have been deleted. For example, 3d2 means line 3 in the first file has been deleted in the second file.

3. Context:

   • The output may include context lines (unchanged lines) to help you understand where the changes occur in the files.

Example Output:

1c1
< this is file1
---
> this is file2

• This means line 1 in the first file (file1) has been changed to line 1 in the second file (file2).

Summary:

• Use < and > to identify which file the content belongs to.
• Look for c, a, and d to understand the type of changes made.

If you have more questions or need further examples, feel free to ask!