Operating system of IBM AS/400 mainframes (called "minicomputers", ''not'' "mainframes", by some). Transaction-oriented (that is, designed for lots of I/O but unchallenging computation; [RPG] is a "native language"); nothing to do with AIX. Tcl/Tk has been ported there: [http://www.export-ventures.com/tcltk.htm] * Tcl 7.6, Tk 4.2 * Requires OS/400 V4R4 or later * The distribution includes the XLIB portion of X Window/400, the Tcl command interpreter, and the Tk (wish) console OS/400 V4R5 is required DB2 access. * [VTCL] - a GUI builder written completely in Tcl/Tk by Stewart Allen, is included free of charge. * [REXEC] and RSH (Remote Shell) - two remote execution command daemons for starting AS/400 applications and commands from remote workstations. * 15-day free trial download, after that it costs about USD 750. ---- [kroc] For Windows & AS400 look here: [http://publib-b.boulder.ibm.com/Redbooks.nsf/RedbookAbstracts/sg245196.html] and for linux & AS400 it's here: [http://www.digiampietro.com/as400/as400.html] ---- In 2000, [IBM] changed the branding (again!). The hardware is now "eServer", and the "platform" is "iSeries" [http://www-132.ibm.com/content/home/store_IBMPublicUSA/en_US/eServer/iSeries/]. So no one writes of AS/400; from here on, it's iSeries. It's not consistent, at least to engineers; IBM still needs to say "OS/400" occasionally, because in fact the company makes available implementations of [Linux], [AIX], and Windows2000, along with OS/400, to run on iSeries hosts. ---- It changed again. In 2004, "i5/OS" succeeded OS/400. Instead of calling them "iSeries", they're now "eServer i5"-s, to emphasize that the identical hardware hosts [Linux] and [AIX], sometimes simultaneously. ---- As of fall 2005, [Vaclav Snajdr] reports that binaries of a port which knows enough to be able to invoke legacy [Cobol] and [RPG] applicationsare available for download from http://www.openlegacy.de/ . ----!!!!!! %|[Category Operating System]|% !!!!!!