I'm not quite sure what you mean by an if statement cannot be zero.
What I mean is that in order to execute what follows the relational operation of the if statement the value cannot be 0.
For example:
This returns absolutely nothing because b[$1] is 0. Or is it?
Or is it an empty string? How can you tell?
But if you do it like this:
from the working script
It does NOT evaluate to 0 and continues to what follows the if.
I guess my real question is what value does b[$1] have by itself.
What value does an empty array have in awk when no values has been assigned yet?
If it's 0, I don't understand because how can you say 0>=20100826010517.txt ?
If it IS an empty string when no values have been assigned to it yet then it would be "">=20100826010517.txt . Which I Can understand.
Could you or anyone point me to some online documentation that specifically states if the value is of an empty array 0 or "an empty string" or what it is?
Or a quote from a specific book?
Last edited by Scott; 08-31-2010 at 01:45 PM..
Reason: Code tags
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