No need to convert to an integer and what not; ++ does the right thing. You also can cure some of your backwhackitis by just passing the current letter as an argument rather than trying to get it to interpolate. 

NEXTBUILDLETTER=$( perl -le '$l=shift;print++$l' $BUILDLETTER )

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Update: Also keep in mind that that's going to behave slightly saner than using ord, for some value of sane where "AA" follows "Z" rather than "[".

The cake is a lie.
The cake is a lie.
The cake is a lie.

In reply to Re: Increment Letter on a Command Line by Fletch
in thread Increment Letter on a Command Line by rashley

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