changing text mode for Linux

Tue Feb 28 01:43:12 PST 2006

In the old DOS day, there was a tool called vmode.exe to switch text
mode from 80x25 to 132x50.

How could I do that in Linux?
-- 
  .~.    http://changmw.homeip.net
 / v \  May the Force and Farce be with you! Linux 2.6.15
/( _ )\  (Ubuntu 5.10)  14:39:01 up 47 days 22:07
  ^ ^    load average: 0.08 0.10 0.09
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