Friday January 25 12:07 AM ET IBM Unveils First Linux-Only Mainframes ARMONK, N.Y. (Reuters) - International Business Machines Corp. (NYSE:IBM - news) on Friday said it is launching its first mainframe computers that will only run Linux, saying the alternative operating system is gaining ground as companies tighten purse-strings in the tough economy. http://dailynews.yahoo.com/h/nm/20020125/tc/tech_ibm_linux_dc_1.html