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#Default runlevel.The runlevels used by RHS are:
# 0-halt(Do NOT set initdefault to this)
# 1 -Single user mode
# 2-Multiuser,without NFS(The same as 3,if you do not have networking)
# 3-Full multiuser mode   
# 4-unused
# 5-X11                  
# 6-reboot(Do NOT set initdefault to this)
#
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2£º¶àÓû§£¬µ«ÊÇûÓÐ NFS ¡£
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fork compare to exec in linux c program

pid_t  pid=fork()
it has 3 situation for the return result pid
0  child
>0 parent process
<0 fork fail
fork create a new process  and it parent live alse when the child process had been created ......

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Linuxϰ²×°ºÍÐ¶ÔØvmware tool

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