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windowscmdcomparisondirectory

Folder Comparisons Via Command Line


I want to compare two folders on Windows (Vista, XP) which have a large number of huge files, which I need to compare. If I use Beyond Compare or such tool to compare the folders, it is taking a lot of time if I do it manually. I need to add that folder comparison to batch file.

So on Windows (XP, Vista), is there any command (built-in) or any 3rd party tool/utility (commercial or freeware - either) to compare two folders using the command line.


Solution

  • There is the built in command COMP that you could use. It depends a little bit on what you actually want to compare.

    Compares the contents of two files or sets of files.

    COMP [data1] [data2] [/D] [/A] [/L] [/N=number] [/C]

    data1 Specifies location and name(s) of first file(s) to compare.

    data2 Specifies location and name(s) of second files to compare.

    /D Displays differences in decimal format.

    /A Displays differences in ASCII characters.

    /L Displays line numbers for differences.

    /N=number Compares only the first specified number of lines in each file.

    /C Disregards case of ASCII letters when comparing files.

    To compare sets of files, use wildcards in data1 and data2 parameters.

    Use a syntax like COMP c:\folder1 c:\folder2 to compare all files in folder1 with the content of folder2. If you need to recurse into the subdirectories, you need to use a batch script using a FOR loop and the PUSHD and POPD command.

    Just leave a comment, if you need help with that.