Technology Tales

Adventures in consumer and enterprise technology

Command line file comparison in Windows

Published on 20^th August 2012 Estimated Reading Time: 1 minute

While UNIX and Linux both have the diff command for comparing the contents of text files, the Windows counterpart was unknown to me until recently. Its name is fc, and it looks as if the f is for file and c is for comparison, though I cannot confirm that as of now. The usage of that command is not dissimilar to the way that things work with diff. Here is an example command:

fc file1.txt file2.txt > file3.txt

This compares file1.txt with file2.txt and sends the output to file3.txt. Any differences between the two files being compared appear to be more clearly labelled than in the diff output's < and > labels. That verbosity could have its uses, but the existence of the fc command is stopping envious glances at the diff one for now, just as findstr is doing the same in comparison with grep.

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