Kumar Gala d058698fd2 Add setexpr command ...

Add a simple expr style command that will set an env variable as the result
of the command.  This allows us to do simple math in shell.  The following
operations are supported: &, |, ^, +, -, *, /.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

2008-03-25 22:16:15 +01:00

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