"Linux , the free computer operating system invented by
Finn Linus Torvalds, made its first big splash at home on Thursday
when it was embraced by Finland's leading broadband Internet
provider Sonera Entrum.
Entrum, which provides high-speed Internet access for 500,000
private and 70,000 corporate subscribers, said it has replaced 60
different Unix and Windows NT servers from different vendors with a
single computer containing 500 virtual servers running Linux
software installed by Red Hat and SuSE.
Linux is free, open-source software, which means that all code
is public and can be adapted by companies and individuals."