Run CD

Task

Implement the function run_cd

• Check if the cd command is called correctly (with exactly 1 argument: the path), then call chdir() to change directories
• if argc != 2, print usage: cd <path> to stderr and return -1
• if chdir() fails, call perror("cd") and return -1
• If successful, return 0

// Handle the cd command. Should have argc == 2 ("cd" and path).
// Call chdir() on the path. Return 0 on success, -1 on error.
int run_cd(int argc, char* path);

TIP

use chdir(path) to change directories. It returns 0 on success, -1 on failure

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Example

$ gcc run_cd.c -o run_cd
$ ./run_cd
cd ..
success
cd
usage: cd <path>
cd /nonexistent
cd: No such file or directory
cd .
success

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Code

#include <stdio.h>
#include <unistd.h>
int run_cd(int argc, char *path)
{
    if(argc != 2){
        fprintf(stderr, "usage: cd %s\n", path);
        return -1;
    }
    if(chdir(path) < 0){
        perror("cd");
        return -1;
    }
    return 0;
}