35 lines
1.1 KiB
Plaintext
35 lines
1.1 KiB
Plaintext
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'\"
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'\" Copyright (c) 1993 The Regents of the University of California.
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'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
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'\"
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'\" See the file "license.terms" for information on usage and redistribution
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'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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'\"
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'\" SCCS: @(#) pid.n 1.5 96/03/25 20:20:57
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'\"
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.so man.macros
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.TH pid n 7.0 Tcl "Tcl Built-In Commands"
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.BS
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'\" Note: do not modify the .SH NAME line immediately below!
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.SH NAME
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pid \- Retrieve process id(s)
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.SH SYNOPSIS
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\fBpid \fR?\fIfileId\fR?
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.BE
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.SH DESCRIPTION
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.PP
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If the \fIfileId\fR argument is given then it should normally
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refer to a process pipeline created with the \fBopen\fR command.
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In this case the \fBpid\fR 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 \fIfileId\fR refers to an open file
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that isn't a process pipeline.
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If no \fIfileId\fR argument is given then \fBpid\fR 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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.SH KEYWORDS
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file, pipeline, process identifier
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