você pode fazer isso, abrir o seu terminal e digitar como
wget -O speedtest-cli https://raw.github.com/sivel/speedtest-cli/master/speedtest_cli.py
chmod +x speedtest-cli
./speedtest-cli
Por exemplo:
[raja@localhost ~]$ ./speedtest-cli
Retrieving speedtest.net configuration...
Retrieving speedtest.net server list...
Testing from BSNL (XXX.XXX.XXX.XXX)...
Selecting best server based on ping...
Hosted by BEAM TELECOM (Hyderabad) [19.00 km]: 39.975 ms
Testing download speed........................................
Download: 1.16 Mbit/s
Testing upload speed..................................................
Upload: 0.38 Mbit/s
[raja@localhost ~]$
Obrigado pelo LinOxide .