Thanks piratesmack: the multicasting feature of clonezilla looks like it will really be a time saver... (i am recycling old computers and giving them to home schooled students, and was looking for a way to batch install); thanks.
It is not hard, though to add an install directory and a 11-line slack-desc file. When recycling ppc computers, I work with the ppc port of slackware, called slackintosh, and there are few precompiled binaries for slackintosh, so I found my self writing slack-desc files so much that I used perl to automate the process. I did overlook the slack-desc in my post, but I think that makepkg would do the job (if I didn't just discover clonezilla)... but as brixtoncalling points out... it is just tar and gunzip with some symlink and ownership scripts... so could just scip slack-desc and use tar and gunzip... whichever's quickest
My only remaining question:
If I used makepkg (or tar/gunzip), and then mounted a different system and used isntallpkg (or tar -zxf) to install the backup.tgz to the different system, I probably would have to run lilo again to make the new system bootable.
What about with clonezilla. Are the clones bootable, or would I have to run lilo again?