Batch file variables

Admitedly, I'm not a big batch file geek but like most of you I infrequently dive in and whip up a batch file for any number of reasons. 

So with that preface, here's my stupid tip: 

When setting a variable, don't included spaces between the assignment operator

This probably isn't what you want:

set myvar = hello

echo %myvar%

%myvar%

But this works as expected:

set myvar=hello

echo %myvar%

hello