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<TITLE>Magic-7.3 Command Reference</TITLE>
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<H1> <IMG SRC=graphics/magic_title2.gif ALT="Magic VLSI Layout Tool Version 7.3">
<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
<H2>shell</H2>
<HR>
Execute a command in a UNIX subshell
<HR>
<H3>Usage:</H3>
<BLOCKQUOTE>
<B>shell</B> [<I>command</I>] <BR><BR>
<BLOCKQUOTE>
where <I>command</I> is a valid UNIX command-line command.
</BLOCKQUOTE>
</BLOCKQUOTE>
<H3>Summary:</H3>
<BLOCKQUOTE>
The <B>shell</B> command allows UNIX commands to be executed from
the magic command line. This use is superceded by the Tcl
interpreter, which executes shell commands directly from the
interpreter prompt. Differences between the two uses is noted
below.
</BLOCKQUOTE>
<H3>Implementation Notes:</H3>
<BLOCKQUOTE>
<B>shell</B> is implemented as a built-in command in <B>magic</B>.
This is similar to the Tcl interpreter execution of shell commands
directly from the Tcl command-line. The primary difference is that
results from the shell interpreter are printed to the calling
terminal with <B>shell</B>, and are printed to the console when
invoked directly from Tcl. For example, note the difference in
the output target for:
<BLOCKQUOTE>
<B>ls -l</B> <PRE> </PRE> <I>vs.</I><BR>
<B>shell ls -l</B>
</BLOCKQUOTE>
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<TABLE BORDER=0>
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<TD> <A HREF=commands.html>Return to command index</A>
</TR>
</TABLE>
<P><I>Last updated:</I> October 8, 2004 at 3:55am <P>
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