I want to use a very small file system for a target running embedded linux.
Where can I get the minimum set of files needed for linux to boot with no problems ?

For example, I don't need busybox. Just few utilities (e.g ls)

Thanks,
Zvika Vered

You are out of luck. I was facing similar problem couple years back - and could not find any description of this 'minimal RFS'. I went by creating striped down file system out of binary rpm's (my hw was based on intel clone), and reducing it while checking that kernel still boots.

Check out TimeSys web site - they have good info on the subject. Good luck.

BTW: you are better of using busybox even for single 'ls', then the real one in /bin/ls because it might require libraries you don't really want on your embedded. Consider dropping 'ls' completely and using 'echo *' instead (at least on your final hardware)