The wrong settings in fstab crash

I modified file /etc/fstab and the modification was incorrect. The tragedy happened. I can not boot normal. When boot sequences go to mount device which record in fstab, then system boot failed. When system failed, there are two choices : one is entering fix state the other is booting again. In fix state, the file system is read only, so, you can do nothing about that. Finally, I use boot-disk and choose "linux rescue" to solve this stupid problem.

Iptables allow BOOTPS/PC

dhcp use udp with port 67 and 68.


iptables -t filter -FORWARD -p udp --dport 67:68 --sport 67:68 -j ACCEPT

FYI:
Iptables Tutorial 1.1.19

C99

There are some features defined by C99:

1.set initial values when allocate new data structure variable
typedef struct humanInfo_s {
char *name;
int age;
}humanInfo_t;

humanInfo obj = {.name="YUNG"};
2. Variable Declarations does not limit on the top of the function body.

3. inline function.

There some many defines in C99 , but I do not list it.
FYI:
ISO/IEC JTC1/SSC22/WG14-C