Look up expressions in man bash.
Brian wrote:
>
> Thank you all very much for your help. I should have made one thing
> clearer, though. The data file is not always numeric, some lines look
> like:
>
> 0100My name is Jim
>
> > strip=${six//0}
>
> What exactly does this line do? How do get the man page for it?
>
> Thanks a lot, the info I've gotten helps me immensely.
>
> -Brian
>
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