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.
regarding expect_out(buffer)

Posted by sharmila (sharmila), 15 November 2005
 when i try to read the expect_out(buffer) from a procedure, it says can't read,no such variable exists.I have even declared the expect_out(buffer) as global inside the procedure.But it says no such variable.

Posted by admin (Graham Ellis), 16 November 2005
You need to declare the whole of expect_out global rather than just one element.


proc pingit what {
   global expect_out
   spawn ping -c 1 $what
   expect \n
   expect \n
   puts -nonewline "$what: $expect_out(buffer)"
   return 1

log_user 0
pingit dandelion
pingit dolphin
puts done

And that runs as

$ expect expog 64 bytes from icmp_seq=0 ttl=50 time=174.669 ms
dolphin: 64 bytes from icmp_seq=0 ttl=64 time=1.032 ms

Posted by sharmila (sharmila), 18 November 2005
Worked for me...

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