Here is a list of cmd.exe features that are not supported by
command.com:
Long filenames (exceeding the 8.3 format)
Command history
Tab completion
Escape character: ^ (Use for: \ & | > < ^)
Directory stack: PUSHD/POPD
Integer arithmetic: SET /A i+=1
Search/Replace/Substring: SET %varname:expression%
Command substitution: FOR /F (existed before, has been enhanced)
Functions: CALL :label
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Tak to jo, tohle z toho dela skvely skriptovaci jazyk. Uz se nemuzu dockat, az to nekdo naportuje na Linux.