I recently installed 

1.   PGPLOT 5 (ver: 5.2.2-15) through Synaptic Package Manager from ubuntu - MOTU-Developers (Mathematics,         Multiverse)

2.  IFEFFIT from Carlo Segre < segre@debian.org>, (version 2:1.2.11d-6~lucid0 ) and 

I am not able to run the demo programs. So I started running demo programs for PGPLOT first.

My examples are in directory:

/usr/share/doc/pgplot5/examples/pgdemo2.f.gz

When I compile the program "depgplot10.f" and executed the file, the interaction on the console is attached in the file attached herewith.

I need help in this regard and I am very very new to "xafs" as well as ubuntu.