My online Linux/NS faqs
This
internet page had the goal to help me in my interaction with the linux world. It will log all the main discoveries that I
found out, which helped me sometime in my Linux introduction, and work
It will be majority talking about Linux (probably Fedora, Ubuntu), UNIX (probably FreeBSD), and the work performed in ns2 (Network Simulator).
I hope you can also benefit of this simple FAQs… ENJOY
1) A linux command guide that have my more-used commands
2) Application installation in
ubuntu
Please remember that when you want to have the latest up to date package list, you must do:
>apt-get update
To upgrade the entire system (to the newer packages that installed) you should write:
>apt-get dist-upgrade
To install something new, you should do:
>apt-get install <package name>...<package name> …
To find a package (and search by string) you should do:
>apt-cach search <some string you are looking for>
To see more information about a package you want to install:
>apt-cach show <package name>
And to see what is installed:
>dpkg -l | grep <package name>
PS: you can also use synaptic it's gui program to do the same.
If not installed do: apt-get install synaptic will do the trick :)
Thanks to Ido Kanner
3)
My favorite NS2 pages....
A very useful and complete
help page (Pedro Estrela)
Example of
TCL scripts and PERL measuring tools
4)
Regarding Debugging…
I am using DDD for normal debugging
And Valgrind to memory allocation debug 1
- 2
5)
Tips on Debugging NS
To
see the last call functions after a "Segmentation Fault"... start gdb with ns
>gdb ns
Input
the file as a parameter
>set
args file_name.tcl
Run
the program
>run
After
the error enter
>bt
6)
To get the energy level of a node, you can do:
>double
energy;
>Node*
node_;
>node_
= MobileNode::get_node_by_address(index); //index is the address of a node
>if (node_) {
>if
(node_->energy_model())
energy = node_->energy_model()->energy();
Thanks to Hajer FERJANI
7)
To have the current positions of a node you need to do:
> MobileNode*
mnode_;
>double x = 0.0,y = 0.0,z = 0.0;
>mnode_->getLoc(&x, &y, &z);
Thanks to Hajer FERJANI
Suggestions: tandre_at_dei.uc.pt Last modification: 29/12/2005