pid(n) Tcl Built-In Commands pid(n)
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NAME
pid - Retrieve process id(s)
SYNOPSIS
pid ?fileId?
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DESCRIPTION
If the fileId argument is given then it should normally refer to a process pipeline created with the open command. 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 identi-
fier 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)
