On Sun, 18 Aug 2013 22:07:02 +0800, you said: > Acctually ,I have just entered shell command line ,no process is running yet ! Actually, if you have a shell command line, at least one process is in fact running - your shell itself. > I don 't clear of why /proc have not been mounted . > So I want to find reason by debuging ,and I find /proc filesystem > exist in ram ,with several entries ceated . > > Chould you tell me the key point that mount /proc on system ? Depends on your system. If you have an embedded system, it may mot mount it at all. If your system uses an initrd or initramfs, it probably gets done by the startup script in there. If neither of those happen, it's usually done by /etc/rc.sysinit or similar, unless your system uses systemd for startup in which case you're going to be digging around to figure out where it does it.
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