problem

[maritos]

               while(1) {  
                char cmd[20];
                printf("Shell: "); scanf("%s",&cmd);
		res = fork();
		if(res==0) {
			if((strcmp("ls",cmd))==0) { execl("/bin/ls","ls",NULL); insert_list(list, "ls"); } 
			if((strcmp("ps",cmd))==0) { execl("/bin/ps","ps",NULL); insert_list(list, "ps"); } 
			if((strcmp("historic",cmd))==0) {  Print_list(list); }
		}
		else {
			wait(&status);	
		}	
	}
}

i´m creating a little shell, and each time i execute a command i want it to
be saved in a linked list, so when i execute the command historic, it prints the commands i had executed before. But when i execute command historic the list don´t print nothing. I think it is because execl, because if i take the instruction execl("/bin/ls","ls",NULL); it prints the list with the elements correct, in this case ls.
Sorry about the English.

[Salem]

How about continuing with the same thread, rather than starting a new thread with a new approach to the same problem.
http://cboard.cprogramming.com/showthread.php?t=70498

People will rapidly start to ignore you if you don't engage in a conversation and just keep posting new threads in the hope that someone will post a solution in response.