用于在阵列中存储ttyUSB *设备的C程序

Question

AM having a C program which uses system to list /dev/ttyUSB* devices how can I store them in an array and process.

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

int main()
{

    system("ls /dev/ttyUSB*");
    printf("Done");
    exit(0);
}

Answer 1

Using system for these things is a bad idea.

First of all, you have to Parse the output of ls , which you should avoid.

Apart from that, this will be quite inefficient. starting programs is rather slow, but you are running a program (written in C), that starts another program (written in C) which calculates something and renders this something into a human-readable form, and then you have to parse the human-readable form to find out what the original something was...

A better way is to do the shortcut can "calculate the something " directly:

check out glob