hello sir,
i was trying to install ns2.33 in ubuntu10.04. i have followed the procedure. in which after the validation there was a command to creat a symlink. the command was, $sudo ln -s/home/neha/ns-allinone-2.33/ns-2.33/ns/usr/bin/ns.
i m tried this command all the way asa much asa possible. but an error has been arrived. the error is "ln: invalid option '/' ". please help me to solve this problem.

Welcome to LQ.
Looks like a faulty procedure.
The mentioned command is bad advice. And wrong.

This is what you should do :
$ cd ns-allinone-2.33/ns-2.33/
$ sudo make install ('make install' will copy 'ns' to /usr/local/bin/)
Make a backup : $ cp ns ns233-orig
$ sudo cp ns233-orig /usr/local/bin/
.. Then you still have an original 'ns*',
if you make any changes to ns-2.33/.
I.e. default simulations may require "ns-orig".


About "procedure´s" you can find on the Internet :
Remember that most of those tutorials are written by young students.
Who are using ns2 and a `Linux OS´ for the first time.


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