On Tue, 24 Jan 2006 [EMAIL PROTECTED] wrote:
> Hi all,
>
> In order to avoid using undefined variables one can use the syntax:
> echo ${badvarname:?}
there are other ways - reffering to underfined variables by itself is NOT
a syntax error.
> which will result in error message would the variable be bad (not "defined" or
> empty). This kind of reference is tedious therefore one could use ksh-u (in a
> script)
here's what i do in shell script:
if [ x"$BLA" == x ]; then
echo "BLA is not set"
else
echo "BLA - '$BLA'"
fi
this is an old trick which i've seen years ago somewhere.
--
guy
"For world domination - press 1,
or dial 0, and please hold, for the creator." -- nob o. dy
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