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RedHat 9 (Linux i386) - man page for pid (redhat section n)

pid(n)						Tcl Built-In Commands					       pid(n)

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NAME
pid - Retrieve process id(s)
SYNOPSIS
pid ?fileId? _________________________________________________________________
DESCRIPTION
If the fileId argument is given then it should normally refer to a process pipeline created with the open com- mand. In this case the pid command will return a list whose elements are the process identifiers of all the processes in the pipeline, in order. The list will be empty if fileId refers to an open file that isn't a process pipeline. If no fileId argument is given then pid returns the process identifier of the current process. All process identifiers are returned as decimal strings.
SEE ALSO
exec(n), open(n)
KEYWORDS
file, pipeline, process identifier Tcl 7.0 pid(n)


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