How to check if two files are identical, within a Windows shell script?



As an IT administrator, it is important to be able to check if two files are identical. This can be done in a Windows shell script with the help of a few useful commands.

The first step is to use the “fc” command to compare the two files. This command will compare the contents of the two files and see if they are identical. The command syntax is as follows: “fc /b file1.txt file2.txt”. This will compare the two files byte-by-byte, and will return a non-zero exit code if the files are not identical.

The next step is to use the “if” command. This command is used to evaluate the exit code from the “fc” command. If the exit code is zero, then the files are identical. The syntax for the “if” command is as follows: “if %errorlevel%==0 (echo Files are Identical) else (echo Files are Different)”. This will display a message to indicate whether or not the two files are identical.

The last step is to use the “goto” command. This command is used to jump to a particular line in the script. This is useful if you want to perform additional actions depending on the outcome of the “fc” and “if” commands. The syntax for the “goto” command is as follows: “goto :label”. This will jump to the label specified in the command.

In summary, the steps for checking if two files are identical in a Windows shell script are:

1. Use the “fc” command to compare the two files.
2. Use the “if” command to evaluate the exit code from the “fc” command.
3. Use the “goto” command to jump to a particular line in the script.

These steps can be used to easily check if two files are identical in a Windows shell script. This can be a useful tool for an IT administrator when ensuring the integrity of files on a system.

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