On 7/31/06, Poor Yorick <[EMAIL PROTECTED]> wrote:
The following line does not perform the "echo" command.
: ${FAKEVAR?} || echo hello
This seems inconsistent, since the return status is set to one, not to mention
that the null command is documented to return a zero exit code. It would be a
convenient and concise syntax for acting on unset variables.
Try this and then run your script:
export FAKEVAR="echo This could have been rm -rf $HOME"
to see why not to do it this way.
On the other hand, if you already know FAKEVAR is not set,
why are you performing a test?
Dave
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