Segmentation fault (core dumped)

The first step, open the virtual machine, open the terminal

Step two, enter #ulimit-c Unlimited to open core dump

Step three, compile the program, enter #gcc-g seg1.c-o SEG1

Fourth step, enter LS to see if there is a core file, and then call #gdb./SEG1 core to see the error message, the first program is a null pointer assignment, the second program error is a read-only string assignment error, can be displayed

Fifth step, close the core dump input #ulimit-C 0 can be

Segmentation fault (core dumped)