The -w option in the diff command is used to ignore all white space when comparing lines in two files. This means that any differences in spaces, tabs, or other white space characters will not be considered when determining if the files are different. It is particularly useful for comparing files where formatting may vary but the actual content is what matters.
For example, using the command:
diff -w file1.txt file2.txtwill compare file1.txt and file2.txt while ignoring any white space differences.
