Linux Bandwidth testing

I occasionally use a tool called iperf for bandwith testing, but when I need it, I struggle to remember the name, this post is to remind me.

[[email protected]]$ iperf -c x.x.x.x
------------------------------------------------------------
Client connecting to x.x.x.x, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[  3] local y.y.y.y port 51269 connected with x.x.x.x port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.1 sec    114 MBytes  95.4 Mbits/sec