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According to Eric Blake on 10/14/2008 10:21 AM:
> But why waste the time going through a temporary variable, when you can use:
>
> test ${foo+set} = set && unset foo
To avoid syntax errors from test, this needs better quoting, as in either:
test x${foo+set} = xset && unset foo
test "${foo+set}" = set && unset foo
- --
Don't work too hard, make some time for fun as well!
Eric Blake [EMAIL PROTECTED]
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