50 lines
1.6 KiB
HTML
50 lines
1.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
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<!--Converted with LaTeX2HTML 96.1-c (Feb 29, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds -->
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<HTML>
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<HEAD>
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<TITLE>The get Command</TITLE>
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</HEAD>
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<BODY LANG="EN">
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<A HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <BR>
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<B> Next:</B> <A HREF="node101.html">The print Command</A>
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<B>Up:</B> <A HREF="node97.html">A dip Reference</A>
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<B> Previous:</B> <A HREF="node99.html">echo and term</A>
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<BR> <P>
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<H3><A NAME="SECTION009323000">The get Command</A></H3>
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<P>
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The get command is dip's way of setting a variable.
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The simplest form is to set a variable to a constant, as used
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throughout the above example. You may, however, also prompt the
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user for input by specifying the keyword ask instead
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of a value:
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<P>
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<pre>
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DIP> get $local ask
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Enter the value for $local:
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</pre>
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<P>
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A third method is to try to obtain the value from the remote host.
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Bizarre as it seems first, this is very useful in some cases:
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Some SLIP servers will not allow you to use your own IP-address on the
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SLIP link, but will rather assign you one from a pool of addresses
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whenever you dial in, printing some message that informs you about
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the address you have been assigned. If the message looks something
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like this ``Your address: 193.174.7.202'', then the following
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piece of dip code would let you pick up the address:
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<P>
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<pre>
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wait address: 10
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get $locip remote
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</pre>
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<HR>
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<P><ADDRESS>
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<I>Andrew Anderson <BR>
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Thu Mar 7 23:22:06 EST 1996</I>
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</ADDRESS>
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</BODY>
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</HTML>
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