How to compare two Files for changes using Command Prompt
If y'all are searching for a way to compare two files on Windows 10/xi without any third-party programme, we have a way for you. In this guide, nosotros bear witness you how you can compare ii files for changes with Command Prompt on Windows ten/11.
You tin compare 2 files using the fc.exe and the comp.exe file compare commands. You can use fc.exe to compare ii ASCII or binary files on a line-past-line basis. windiff.exe utility, a tool that graphically compares the contents of two ASCII files, or the contents of ii folders that incorporate ASCII files, to verify whether they are the aforementioned.
If you desire to find how two similar files have undergone changes over time, in that location is a built-in command on Windows that lets yous compare. That control is fc. This command is useful in comparison two text files and know how they are inverse in its script and its modifications. With 'fc' command, you tin can compare a text file with its latest version or detect changes at the script level in different scripts similar Binary, Unicode, or ASCII. Let's meet how we can utilise 'fc' command and compare two Files for changes With Control Prompt on Windows 10/11.
Compare two Files for Changes using FC.exe command-line
There are different parameters in fc control which you tin can use it to achieve different result after entering the syntax in Command Prompt.
| Parameters | Meaning |
| /a | The parameter displays only the first and last line for each prepare of differences |
| /b | Compares the 2 files in binary mode, byte by byte, and does not try to resynchronize the files later finding a mismatch. |
| /c | Ignores the alphabetic character case. |
| /l | Compares the files in ASCII mode, line-by-line, and attempts to resynchronize the files subsequently finding a mismatch. |
| /lb<n> | Sets the number of lines for the internal line buffer to N . The default length of the line buffer is 100 lines. If the files that y'all are comparing have more than than 100 consecutive differing lines, fc cancels the comparison. |
| /n | Displays the line numbers during an ASCII comparison. |
| /off[line] | Doesn't skip files that have the offline attribute set. |
| /t | Prevents fc from converting tabs to spaces. |
| /u | Compares files as Unicode text files. |
| /due west | Compresses white space (that is, tabs and spaces) during the comparison. If a line contains many consecutive spaces or tabs, /w treats these characters every bit a single space. When used with /due west , fc ignores white space at the offset and end of a line. |
| /<nnnn> | Specifies the number of sequent lines that must match following a mismatch, before fc considers the files to exist resynchronized. |
| [<drive1>:] [<path1>] <filename1> | Specifies the location and proper name of the kickoff file or set of files to compare. filename1 is required. |
| [<drive2>:] [<path2>] <filename2> | Specifies the location and name of the second file or set of files to compare. filename2 is required. |
| /? | Displays help at the command prompt. |
Usage of the fc command
How exercise I compare two files in Windows?
You can use fc command to compare two text files for changes or use the windiff.exe utility that comes with the Windows installation. The tool helps you graphically compare the contents of ii ASCII files, or the contents of two folders that contain ASCII files, to verify if they are the same or not. Yous can as well compare two text files in Windows using fc command. Information technology has different parameters to exercise different types of comparisons.
1] If you want to compare ii files names June and July in ASCII format and brandish the result in an abbreviated format, you can employ:
fc /a june.rpt july.rpt
2] If you want to make a binary comparison of 2 bat files named June and July, use the following syntax:
fc /b june.bat july.bat
iii] If you want to compare every bat file in a directory with July.bat file, use the following syntax:
fc *.bat july.bat
4] If yous want to compare July.bat file on C drive with July.bat file on D drive, you can use:
fc c:july.bat d:*.bat
five] If you want to compare each batch file in the root directory on drive C to the file with the same name in the root directory on drive D, y'all can use:
fc c:*.bat d:*.bat
These are some of the commonly usable syntax using fc command in Control Prompt. You need to sympathize the parameters perfectly and write your own syntax if yous have special requirements. Microsoft has some detailed explanations of some regularly used fc commands.
Related Read: Useful Commands to Manage Files and Folders using Command Prompt.
Source: https://www.thewindowsclub.com/compare-two-files-for-changes-with-command-prompt
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