Training, Open Source computer languages
PerlPHPPythonMySQLApache / TomcatTclRubyJavaC and C++LinuxCSS 
Search for:
Home Accessibility Courses Diary The Mouth Forum Resources Site Map About Us Contact
For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Interprocess communication

Posted by ubuntuv (ubuntuv), 23 February 2006

I am getting started in TCL.  Here is my problem, plz, reply

I invoked a number of subprocesses(not forking).  I have to communicate through all the processes to and from the main program.

I think, using Open command will be a good idea.  From parent process I can able to use puts and gets from the file descriptor.  But, from subprocess, I dont know, how I can read the message from the main program.


Posted by admin (Graham Ellis), 26 February 2006
There are several ways of starting other processes.  I understand that you are not using forks.   Please tell me what you are using (and perhaps post a few lines of code as a sample) so that I can give you an appropriate answer.

This page is a thread posted to the opentalk forum at and archived here for reference. To jump to the archive index please follow this link.

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2022: Well House Manor • 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • FAX: 01144 1225 793803 • EMAIL: • WEB: • SKYPE: wellho