[Help-bash] Hi, Could you help me to solve a bash problem?

[MD5Ryan]

Hi, 
    this email is not report a bash bug, i just have a problem, and i have 
searched the solution for a long time but no same question in the internet.so i 
have to connect somebody like u work for GNU and developed bash...

    my program need check the command user input, if the command is in the 
white-list, it will run normal, but if it's not i will use my program to trace 
it, like strace. so i wanna know how can i do this? bashrc setting works?or i 
must modify the bash source code? add a function in read_command(), then 
re-compile bash?
    i will appreciate it if u reply my email. looking forward to u reply!


a student from china, Ryan(if my email is impolite, please forgive my rudeness)