1.7 打印用户ID和组ID

file/uidgid.c

1 #include "apue.h"
2 int
3 main(void)
4 {
5     printf("uid = %d, gid = %d
", getuid(), getgid());
6     exit(0);
7 }

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原文地址：https://www.cnblogs.com/paullam/p/3844019.html