如何在 Linux 中将 UID/GID 映射到用户名/组名
[英]How to map UID/GID to username/groupname in linux
问题描述
In a C program on Linux, I get UID and GID of a file, but I want to print the username and group name.
在 Linux 上的 C 程序中，我获得了文件的 UID 和 GID，但我想打印用户名和组名。 So how to map UID/GID to username/group name?那么如何将 UID/GID 映射到用户名/组名呢？
1 个解决方案
解决方案1
0 2015-09-01 14:58:43
Use the getpwuid function to get the username associated with a uid:使用getpwuid函数获取与 uid 关联的用户名：
struct passwd *getpwuid(uid_t uid);
The name is returned in passwd.pw_name名称在passwd.pw_name返回
For groups, use getgrgid :对于组，使用getgrgid ：
struct group *getgrgid(gid_t gid);
The name is returned in group.gr_name名称在group.gr_name返回
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