http://200yi.com/ff_internal/ 2026-04-28T02:51:54+0800 http://200yi.com/ff_internal/ http://200yi.com/ff_internal/lib/tpl/mnml-blog/images/favicon.ico text/html 2023-06-17T21:25:19+0800 Anonymous (anonymous@undisclosed.example.com) http://200yi.com/ff_internal/wiki.php?id=wiki:Public-Project:Demo:%E4%BD%BF%E7%94%A8popen%E6%96%B9%E6%B3%95%E8%8E%B7%E5%8F%96free%E5%91%BD%E4%BB%A4%E7%BB%93%E6%9E%9C&rev=1687008319&do=diff 功能： 当前进程使用 popen 方法执行“free -g”命令，并从输出中提取“used”值。 #include <stdbool.h> #include <string.h> #include <stdio.h> #include <stdlib.h> int main(int argc, char **argv) { char mem_uesed_def[] = {"0"}; char *mem_used = mem_uesed_def; // mem used bool b_free = false; char buf_ps[512] = {0}; FILE *f_free = popen("free -m", "r"); if (f_free) { while (fgets(buf_ps, 512, f_free)) { if (strlen(buf_ps) > 4 && strncasecmp(buf_ps, "Mem:", 4) == 0) { b_free…