Manual Pages for UNIX Operating System command usage for man pid

Tcl Built-In Commands                                     pid(1T)



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NAME
     pid - Retrieve process identifiers

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  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.

EXAMPLE
     Print process information about the processes in a  pipeline
     using  the SysV ps program before reading the output of that
     pipeline:

          set pipeline [open "| zcat somefile.gz | grep foobar | sort -u"]
          # Print process information
          exec ps -fp [pid $pipeline] >@stdout
          # Print a separator and then the output of the pipeline
          puts [string repeat - 70]
          puts [read $pipeline]
          close $pipeline


SEE ALSO
     exec(1T), open(1T)


KEYWORDS
     file, pipeline, process identifier

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:










Tcl                     Last change: 7.0                        1






Tcl Built-In Commands                                     pid(1T)



     _______________________________________
    |   ATTRIBUTE TYPE   |  ATTRIBUTE VALUE|
    |____________________|__________________|_
    | Availability       |  runtime/tcl-8  |
    |____________________|__________________|_
    | Interface Stability|  Uncommitted    |
    |____________________|_________________|

NOTES
     Source for Tcl is available on http://opensolaris.org.













































Tcl                     Last change: 7.0                        2