07-30-2009
There must be better ways to experiment with libc than to override it globally... In any case: What distribution are you using? If it comes with busybox, booting with the kernel parameter init=/bin/bb may bring you to a minimal but usable shell. Otherwise, you'll need to boot your system with a liveCD and take out the changes you made.
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CPURC(8) System Manager's Manual CPURC(8)
NAME
cpurc, termrc - boot script
SYNOPSIS
cpurc
termrc
DESCRIPTION
After the kernel boots, it execs /boot (see root(3)), which in turn execs /$cputype/init. Init(8) sets the $service environment variable
to cpu or terminal, and then invokes the appropriate rc script to bring the system up.
Based on the values of $sysname and $terminal these scripts start appropriate network processes and administrative daemons and enable swap-
ping. Cpurc sets /env/boottime to the time cpurc was executed and /env/NPROC to a value suitable for parallel compilation in mk(1).
These files should be edited by local installations to reflect the configuration of their systems.
SOURCE
/rc/bin/cpurc
/rc/bin/termrc
SEE ALSO
srv(4), namespace(6), dkconfig(8), init(8), listen(8)
CPURC(8)