27 lines
1.4 KiB
HTML
27 lines
1.4 KiB
HTML
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<HTML><HEAD><TITLE>Tcl Built-In Commands - pid manual page</TITLE></HEAD><BODY>
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<H3><A NAME="M2">NAME</A></H3>
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pid - Retrieve process id(s)
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<H3><A NAME="M3">SYNOPSIS</A></H3>
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<B>pid </B>?<I>fileId</I>?<BR>
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<H3><A NAME="M4">DESCRIPTION</A></H3>
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If the <I>fileId</I> argument is given then it should normally
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refer to a process pipeline created with the <B><A HREF="../TkCmd/open.htm">open</A></B> command.
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In this case the <B>pid</B> command will return a list whose elements
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are the process identifiers of all the processes in the pipeline,
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in order.
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The list will be empty if <I>fileId</I> refers to an open file
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that isn't a process pipeline.
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If no <I>fileId</I> argument is given then <B>pid</B> returns the process
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identifier of the current process.
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All process identifiers are returned as decimal strings.
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<H3><A NAME="M5">SEE ALSO</A></H3>
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<B><A HREF="../TkCmd/exec.htm">exec</A></B>, <B><A HREF="../TkCmd/open.htm">open</A></B>
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<H3><A NAME="M6">KEYWORDS</A></H3>
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<A href="../Keywords/F.htm#file">file</A>, <A href="../Keywords/P.htm#pipeline">pipeline</A>, <A href="../Keywords/P.htm#process identifier">process identifier</A>
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<HR><PRE>
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<A HREF="../copyright.htm">Copyright</A> © 1993 The Regents of the University of California.
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<A HREF="../copyright.htm">Copyright</A> © 1994-1996 Sun Microsystems, Inc.
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<A HREF="../copyright.htm">Copyright</A> © 1995-1997 Roger E. Critchlow Jr.</PRE>
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</BODY></HTML>
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