Question

(passing and parsing arguments) Make the mini-shell (from the previous part) a little more powerful by allowing arguments to the commands. For example, it should be able to execute commands such as morefilename and Is-In/tmp etc. (MoreShell.c MoreShell) armorefilename and ls

this is the code you should use from already existing shell i created .

Just gothrough the programand execute that command.and execute in linux. It takes the command from the user and execute.

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

int main()
{
//cmd1 is the ,hr variable which holds the commands
char cmd1[10];
printf("Enter the command without options like ls or date");
scanf("%s",&cmd1);
printf("%s\n",cmd1);
//system function is used for to run the unix commad, it use
system(cmd1);
return 0;
}

#include<stdlib.h>

int main()
{
//cmd1 is the ,hr variable which holds the commands
char cmd1[10];
printf("Enter the command without options like ls or date");
scanf("%s",&cmd1);
//system function is used for to run the unix commad, it use
system(cmd1);
return 0;
}

Answer 1

Solution: -

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

#define MAX_CMN_LEN 100

int main(int argc, char *argv[])
{
char cmd[MAX_CMN_LEN] = "", **p;

if (argc < 2) /*no command specified*/
{
fprintf(stderr, "Usage: ./program_name terminal_command ...\n");
exit(EXIT_FAILURE);
}
else
{
strcat(cmd, argv[1]);
for (p = &argv[2]; *p; p++)
{
strcat(cmd, " ");
strcat(cmd, *p);
}
system(cmd);
}

return 0;
}

how to run programm:-

1). open up a terminal and compile the program

2). run it (for example in Ubuntu) ./program_name comman_name -anything - anything

example: ./a.out ls

Output:- It will print all current directory folder and file name.

Ouput screenshot:-

Thanks :)