[personal profile] chebe
Extract .tgz:
tar xvzf arduino-0018.tgz

Some other things to note

Date: 2010-03-08 02:19 pm (UTC)
From: [identity profile] http://certifi.ca/JonTheNiceGuy
tar xfz will extract it without listing all the contents, and tar xfj or xfvj will extract a .tar.bz2 file (again, missing off the v will stop it from listing all the contents).

All the best,

Jon "The Nice Guy" Spriggs