test.c

#include <stdio.h>
#include <stdlib.h>
#include <spawn.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>

#define N 12

extern char **environ;

char *allowed[N] = {"cp","touch","mkdir","ls","pwd","cat","grep","chmod","diff","cd","exit","help"};

int isAllowed(const char*cmd) {
        // return 1 if cmd is one of the allowed commands
        // return 0 otherwise

        for (int i=0;i<N;i++) {
                if (allowed[i]==cmd){
                        return(1);
                }
        }
        return 0;
}

int main() {
	
	char line[256];

	int count;
	fgets(line,256,stdin);

	//count how many arguments there are going to be
	for (int i=0; i<strlen(line); i++) {
        	if (pathName[i]==' '){
            		count++;
        	}
    	}


	char *argv[20];


	nexttoken=strtok(tmp," ");

	
	if (isAllowed("askdf")) {
		printf("eyy");
	}
	return 0;
}