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Variables & the command line

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Posted by Callista   (3 posts)  [Biography] bio
Date Sat 28 Jun 2008 01:33 AM (UTC)  [ quote  ]
Message
How do you use a variable from the command line? Every time I try, the program doesn't know what I'm doing.

For example: The variable "sword1" is given a value of "sword134878". But when I type in "examine @sword1", the program returns that I don't have such an item. When I use it as a part of a script it works just fine. What am I doing wrong?

Second question: I want to use an alias with variables in it, like so:

<aliases>
<alias
match="vv * *"
enabled="y"
expand_variables="y"
sequence="100"
>
<send>envenom @sword1 with @%1
envenom @sword2 with @%2
</send>
</alias>
</aliases>

The asterisks are both going to be aliases referring to different types of venoms. I don't want to type out the whole name because it would take overly long. And it's really, really inelegant to type out all possible combinations of venoms and make an alias for each. That would be ridiculous.

I think this is connected to the "using a variable from the command line" problem because of course this particular alias is sending variables to the command line.
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Posted by Nick Gammon   Australia  (18,770 posts)  [Biography] bio   Forum Administrator
Date Reply #1 on Sat 28 Jun 2008 03:01 AM (UTC)  [ quote  ]

Amended on Sat 28 Jun 2008 06:36 AM (UTC) by Nick Gammon

Message
For expanding variables on the command line, see this post:

http://www.gammon.com.au/forum/?id=8557

Look for the short plugin Expand_Variables - with that installed it will expand variables.

However to solve your particular case you can save having to use the @ at all, if you use this alias:


<aliases>
  <alias
   match="vv * *"
   enabled="y"
   send_to="12"
   sequence="100"
  >
  <send>

require "var"

Send ("envenom " .. var.sword1 .. " with " .. var ["%1"])
Send ("envenom " .. var.sword2 .. " with " .. var ["%2"])

</send>
  </alias>
</aliases>


With that you could just type: vv v1 v2

And if v1 was a variable for venom1, and v2 was a variable for venom2, then they would both be looked up, and the appropriate swords envenomed.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Callista   (3 posts)  [Biography] bio
Date Reply #2 on Sat 28 Jun 2008 03:59 AM (UTC)  [ quote  ]
Message
Worked well, Thanks.
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