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The ELSE clause must occur on the same line as the command after the IF.
For example:

IF EXIST filename. (
del filename.
) ELSE (
echo filename. missing.
)

The below example would NOT work because the del command needs to be terminated by a newline:

IF EXIST filename. del filename. ELSE echo filename. missing

Nor would the below example work, since the ELSE command must be on the same line as the end of the IF command:

IF EXIST filename. del filename.
ELSE echo filename. missing

The below example would work if you want it all on one line:

IF EXIST filename. (del filename.) ELSE echo filename. missing


PS:SEE MORE INFORMATION ABOUT ABOVE :http://www.computerhope.com/if.htm