WinDiff

Compare the contents of two files or sets of files with a graphical interface.

Syntax
      windiff [path1] [path2]

Key
    path   Individual files to compare
           or a directory of files to compare

If either path is not specified it will default to the current directory (or a matching file in the current directory)

If nothing is specified, the GUI will appear - select files to compare with the menus.

White background = parts common to both files.
Red background = parts that belong to the file listed on the left .
Yellow background = parts that belong to the file listed on the right .

Registry files (exported with regedit) can also be compared. Also see the help file Windiff.hlp.

Downloads

Microsoft - Full SDK download 408098 Kb
WinDiff - Grigsoft (3rd party) download 75 Kb

"Shall I compare thee to a summer's day? Thou art more lovely and more temperate.
Rough winds do shake the darling buds of May, And summer's lease hath all too short a date" - Shakespeare

Related Commands:

COMP - Compare two files and display any characters which do NOT match
FC - Compare two files
FIND - Search for a text string in a file
FINDSTR - Search for strings in files
WinMerge (Sourceforge)
Q171780 - Use WinDiff to compare registry files

Equivalent Linux BASH commands:

comm - Compare two sorted files line by line
cmp - Compare two files
diff - Display the differences between two files