在 C 中读取 ping 的控制台输出
Reading console output for ping in C
我目前正在尝试通过 ping 不同的 IP 来编写一些测试。我得到了这些命令的 system()
,但我想读取控制台输出并基于该输出写入 string(like TEST PASSED/TEST FAILED)
。有没有一种方法可以在不将控制台日志保存到文件并从中读取的情况下执行此操作(对我来说似乎太复杂了)。
下面是我做的简单代码示例:
switch (choice) {
case 1:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(DEI));
printf("----------------------------------------------------\n\n");
break;
case 2:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(AURIX));
printf("----------------------------------------------------\n\n");
break;
case 3:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(MID2EI));
printf("----------------------------------------------------\n\n");
break;
case 4:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(VEI));
printf("----------------------------------------------------\n\n");
break;
case 5:
printf("Quitting...\n");
sleep(1000);
running = false;
break;
default:
printf("Wrong input. Try again.\n");
printf("----------------------------------------------------\n\n");
break;
}
如果您对粗略的可用性监视器感兴趣,可以通过 <sys/wait.h>
中的宏来检查 ping
的退出值
#include <sys/wait.h>
int exit_status = system("ping -c 1 8.8.8.8");
if (WIFEXITED(exit_status) && WEXITSTATUS(exit_status) == 0)
puts("Reachable!");
else
puts("Unreachable");
如果您真的想解析输出,https://pubs.opengroup.org/onlinepubs/009696799/functions/popen.html 中的 popen()
示例非常切题:
#include <stdio.h>
...
FILE *fp;
int status;
char path[PATH_MAX];
fp = popen("ls *", "r");
if (fp == NULL)
/* Handle error */;
while (fgets(path, PATH_MAX, fp) != NULL)
printf("%s", path);
status = pclose(fp);
if (status == -1) {
/* Error reported by pclose() */
...
} else {
/* Use macros described under wait() to inspect `status' in order
to determine success/failure of command executed by popen() */
...
}
我目前正在尝试通过 ping 不同的 IP 来编写一些测试。我得到了这些命令的 system()
,但我想读取控制台输出并基于该输出写入 string(like TEST PASSED/TEST FAILED)
。有没有一种方法可以在不将控制台日志保存到文件并从中读取的情况下执行此操作(对我来说似乎太复杂了)。
下面是我做的简单代码示例:
switch (choice) {
case 1:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(DEI));
printf("----------------------------------------------------\n\n");
break;
case 2:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(AURIX));
printf("----------------------------------------------------\n\n");
break;
case 3:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(MID2EI));
printf("----------------------------------------------------\n\n");
break;
case 4:
system("ping -c " STR(COUNTER)" -w "STR(TIMER) " " STR(VEI));
printf("----------------------------------------------------\n\n");
break;
case 5:
printf("Quitting...\n");
sleep(1000);
running = false;
break;
default:
printf("Wrong input. Try again.\n");
printf("----------------------------------------------------\n\n");
break;
}
如果您对粗略的可用性监视器感兴趣,可以通过 <sys/wait.h>
ping
的退出值
#include <sys/wait.h>
int exit_status = system("ping -c 1 8.8.8.8");
if (WIFEXITED(exit_status) && WEXITSTATUS(exit_status) == 0)
puts("Reachable!");
else
puts("Unreachable");
如果您真的想解析输出,https://pubs.opengroup.org/onlinepubs/009696799/functions/popen.html 中的 popen()
示例非常切题:
#include <stdio.h>
...
FILE *fp;
int status;
char path[PATH_MAX];
fp = popen("ls *", "r");
if (fp == NULL)
/* Handle error */;
while (fgets(path, PATH_MAX, fp) != NULL)
printf("%s", path);
status = pclose(fp);
if (status == -1) {
/* Error reported by pclose() */
...
} else {
/* Use macros described under wait() to inspect `status' in order
to determine success/failure of command executed by popen() */
...
}