Linked by Binh Nguyen on Wed 7th Jan 2004 18:08 UTC
Linux When Knoppix was first released it was heralded as revolutionary in the Linux world. Its autodetection and configuration capabilities were unsurpassed. Many of my colleagues remarked that if 'KNOPPIX can't do it, Linux can't do it'. Theoretically, one would be able to get a Knoppix CD, pop it into an arbitrary system, run it, save one's data to a partition, USB stick, etc....), reboot and the existing system would be left completely as it was before the CD was placed in the system.
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knopppix
by James on Wed 7th Jan 2004 20:04 UTC

The slow times & long bootup is processor & cdrom drive speed dependent. Knoppix boots about a minute faster between my P4 system & my dual P2 system. The Knoppix filesystem is actually a compressed filesystem image that is loopback mounted. This means that in order to load mozilla or OOo.org the system needs to read the compressed filesystem & then decompress the program and then execute the program.

free command:
see http://www.silug.org/lists/silug-discuss/200210/msg00146.html & http://www.aplawrence.com/Bofcusm/2118.html where the free command is explained by the kernel caching as much as it can. Thus I would gather that the free command does not show us the memory useage like the DOS mem command or the Windows Task Manager.