18 char *shell_current_path = NULL;  variable
56         int cwd_len = strlen(shell_current_path);  in get_target_filepath()
65         strncpy(file_path, shell_current_path, cwd_len);  in get_target_filepath()
135     int current_dir_len = strlen(shell_current_path);  in shell_cmd_cd()
150         if (!strcmp("/", shell_current_path))  in shell_cmd_cd()
157             if (shell_current_path[index] == '/')  in shell_cmd_cd()
160         shell_current_path[index] = '\0';  in shell_cmd_cd()
188             free(shell_current_path);  in shell_cmd_cd()
190             shell_current_path = new_path;  in shell_cmd_cd()
192             shell_current_path[dest_len] = '\0';  in shell_cmd_cd()
219         strncpy(new_path, shell_current_path, current_dir_len);  in shell_cmd_cd()
227             free(shell_current_path);  in shell_cmd_cd()
230             shell_current_path = new_path;  in shell_cmd_cd()
257     struct DIR *dir = opendir(shell_current_path);  in shell_cmd_ls()
302     if (shell_current_path)  in shell_cmd_pwd()
303         printf("%s\n", shell_current_path);  in shell_cmd_pwd()