The Commands Do Not Work

[Wei Gao]

Hi Friend,
 
I got a problem when I downloaded your 
cygwin20.1:
 
After I downloaded your source code of xca, xcb, ..., xcl, in 
DOS system, I finished the following,
 
copy /b xca + xcb + xcc + xcd + ... + xck + xcl 
dev-src.tar.bz2
del xc*.*
But, when I used the command -- bunzip2 
dev-src.tar.bz2
I got error message --Bad command or file name.
 
Same thing with --tar xvf dev-src.tar
I don't know why. Could you give me a reply about this?  Your 
help is greatly appreciated!!
 
Wei