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