In the last episode (Jul 26), Peter Rosa said:
> And what's wrong on [ 0 -gt 0 -a -lt 0].

-lt needs a number in front of it, since it does a less-than comparison.

> > > Could you, please, explain the following line: [ $n -gt 0 -a $rc -lt 1 ]

... which means that $rc is probably empty.

        Dan Nelson
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