Thread: c shell scripting!!

Originally Posted by http://www.cppreference.com/stdother/system.html

The system() function runs the given command as a system call. The return value is usually zero if the command executed without errors. If command is NULL, system() will test to see if there is a command interpreter available. Non-zero will be returned if there is a command interpreter available, zero if not.

Why not just use mostly C?

Code:

#include <stdio.h>
#include <stdlib.h>

int main(int arg1, char *arg2[])
{
	int a;
	printf("Linux Shell Script Tutorial\n");
	printf("Main Menu:\n");
	printf(" [1] Show Date and Time\n [2] See Calendar\n [3] Start Vi\n");
	printf("Please Choose a number: ");
	scanf("%d",&a);
	
	if(a==1)
	{
		system("date");
	}
	else if(a==2)
	{
		system("cal");
	}
	else
	{
		system("vi");
	}
	
	return 0;
}

also, avoid using system() - it opens your program up to security breaches.