I have installed NS2 (network simulator 2.34) on my ubuntu 12.4. But when I execute the ns ns-simple.tcl in the terminal only the following messages have been shown without any GUI or schematic of my network:

CBR packet size = 1000 CBR interval = 0.0080000000000000002 ns:
finish: couldn't execute "nam": no such file or directory
while executing "exec nam out.nam &"
(procedure "finish" line 7)
invoked from within "finish"

but I want to use it's GUI, Can anyone help me?


I finally could solve my problem haha!!!
the problem was the nam package, It must be installed to show the GUI, I installed it by:
apt-get install nam
After this installation every thing will be okay
screenshot: enter image description here

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