[ns] Installation problems with ns-2.33

[Tom Henderson]

Siraj Shaikh wrote:
> I installed ns-2.33 on my machine (Ubuntu). Followed the intstructions
> on here: http://nsnam.isi.edu/nsnam/index.php/Installing_ns2.31_on_Ubuntu7.04
> 
> Everything worked fine and as expected. No errors encountered.
> 
> I the validation set up and even the path/environment variables. Have
> checked the paths since then and they are all fine.
> 
> The problem: for any file xxx.tcl (in the right folder) every time I type
> 
> $ ns xxx.tcl
> 
> I get
> 
> $ xxx.tcl does not exist, try again
> 
> Why? When I type
> 
> $ ns
> 
> I get
> 
> Usage:      host [-v] [-a] [-t querytype] [options]  name  [server]
> Listing:    host [-v] [-a] [-t querytype] [options]  -l zone  [server]
> Hostcount:  host [-v] [options] -H [-D] [-E] [-G] zone
> Check soa:  host [-v] [options] -C zone
> Addrcheck:  host [-v] [options] -A host
> Listing options: [-L level] [-S] [-A] [-p] [-P prefserver] [-N skipzone]
> Common options:  [-d] [-f|-F file] [-I chars] [-i|-n] [-q] [-Q] [-T] [-Z]
> Other options:   [-c class] [-e] [-m] [-o] [-r] [-R] [-s secs] [-u] [-w]
> Special options: [-O srcaddr] [-j minport] [-J maxport]
> Extended usage:  [-x [name ...]] [-X server [name ...]]
> 
> What is the problem? Please help!
> 
> 

It looks like you are not invoking "ns" the network simulator but 
another program named "ns" that is a name service.  If you type "which 
ns" you will see what program is being invoked when you simply type 
"ns".  To work around this, try typing the absolute path to the ns 
binary that you want to invoke, such as "/usr/local/bin/ns xxx.tcl".

Tom