Good morning,
On 14/10/14 at 2:29 PM -0700, Greg Raven <[email protected]> wrote:
Is there such a thing as variables for Unix worksheets? I've
checked the Users Manual but didn't find anything. Maybe that's
just me, though.
Not for worksheets, but you can use ENV or shell variables.
Worksheets are really just a type of terminal to access a shell.
(The status bar at the bottom will show which shell is being used.)
All the standard variable assignments and evaluation should work
just fine. There are subtle differences between the different
shell types though. My examples (below) work for bash.
unix-worksheet-variable = "MX"
dig -t %unix-worksheet-variable% example.org
dig -t %unix-worksheet-variable% example.com
dig -t %unix-worksheet-variable% example.net
dig -t %unix-worksheet-variable% example.info
dig -t %unix-worksheet-variable% example.biz
would become:
export rectype="MX"
dig -t $rectype example.org
dig -t $rectype example.com
dig -t $rectype example.net
dig -t $rectype example.info
dig -t $rectype example.biz
But combine some looping and it gets better:
export rectype="MX"
for dom in example.org example.com example.net example.info example.biz
do
dig -t $rectype $dom
done
Or shorten it to two lines:
export rectype="MX"
for dom in example.org example.com example.net example.info
example.biz; do dig -t $rectype $dom; done
Get even fancier:
for rectype in A MX NS TXT
do
for dom in example.org example.com example.net example.info example.biz
do
dig -t $rectype $dom
done
done
Use shell variables in your worksheets and enjoy the power.
Charlie
--
Charlie Garrison <[email protected]>
github.com/cngarrison metacpan.org/author/CNG
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