CMD files are saved in the memory before execution but BAT files are not saved in the memory and execution happens line by line. CMD was created as interaction with cmd.exe and does not have any compatibility with though the commands run in whereas BAT was created with environment.The error variable remains the same unless and error is shown in BAT scripts. The error variable is always reset to zero in CMD. The execution is both the scripts are different due to the error variable.CMD is faster and more stable when compared with BAT.BAT files do not need any extensions to run the program. CMD provides extensions to run the files.This happens when both CMD and BAT files have the same filenames and are saved in the same directory. To run a CMD script, we have to enter the filename.cmd whereas to run a BAT script, just the filename is sufficient for the program.BAT scripts were made for running in all systems. CMD does not allow execution in non-NT systems.CMD runs in most scripts whereas BAT by itself will not run in scripts unless made to do so.CMD is backward compatible while BAT is not backward compatible.CMD files have the current version of Microsoft language while BAT has the older version of the Microsoft language.CMD file will not work in a 16-bit environment whereas BAT works in all the environments.BAT scripts are older version as it is developed for DOS command prompt. CMD has improved scripting because it is developed for Windows NT.
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