tcl7.6 User Commands - pid
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 command.
In this case the pid command will return a list whose ele-
ments 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 iden-
tifier of the current process. All process identifiers are
returned as decimal strings.
KEYWORDS
file, pipeline, process identifier