tools available for Bandwidth/throughput measurement from command line
 

Hi,
I want any available tools for measuring bandwith from commandline. But the tool should give me proper bandwidth like speak easy. but speak easy is not open source, so i cant use it.
I cant waste more space for the tool. and this tool will be on client side.
iperf is one of the tool but it needs server and it gives server side bandwidth and i want client side bandwidth. so i cant use it.
I found bing tool wich actually works as ping just measures bandwidth. bt its not giving me proper bandwidth. if anyone knows wat options should i use with bing command he/she can suggest me.
and if anyone know any other tool available for bandwidth measurement pls let me knw.

bwm and/or bwm-ng might be what you're looking for.

I haven't used bwm for some time, so I'm assuming from the existence of bwm-ng that bwm is no longer maintained, but it measures bandwidth usage by interface. bwm-ng does at least that much and seems to offer more options as well.

I tried evrything but only i find perfect is iperf...

I used iperf only.. the upstram bandwidth got measured perfectly but the downstream bandwidth is not showing. its working fine with the LAN.. but when i tries server as another machine and client as other machine and both of them are not in LAN. it creates problem as port forwarding is not done.. so will any1 advice me how to edit iperf kernel and wat ways are there. also any other tool just available for downstream bandwidth measurement..