$ set a
a b=c
ALLUSERSPROFILE=C:\Documents and Settings\All Users
APPDATA=C:\Documents and Settings\Administrator\Application Data
$ if defined a b (echo OK) else (echo NO)
$ if defined "a b" (echo OK) else (echo NO)
NO
$ if defined "a^ b" (echo OK) else (echo NO)
NO
$ if defined (a b) (echo OK) else (echo NO)
$ |
|