To see the diff of a single file between two different commits using Git commands, you can use the following command:

git diff <commit_hash1> <commit_hash2> -- <file_path>

Replace <commit_hash1> and <commit_hash2> with the commit hashes you want to compare, and <file_path> with the path to the specific file you want to see the diff for.

For example, if you want to see the diff of a file named "example.txt" between commit "abc123" and commit "def456," you would run:

git diff abc123 def456 -- example.txt

This command will show you the differences in the content of "example.txt" between the two specified commits. It will display the added lines (marked with "+") and removed lines (marked with "-") for that particular file.