获取当前用户名？ [英] get current user name?

问题描述

如何检索当前登录用户的用户名？我基本上要检查用户是否以root身份登录，如果没有，请退出

程序。


我虽然关于使用LOGNAME环境变量，但如果普通的

用户使用su root，则环境变量仍然具有用户的登录名

名称。

How do I retrieve the username of the currently logged in user? I
basically to check if the user is logged in as root and if not, exit
the program.

I though about using the LOGNAME environment variable, but if a regular
user used su root, the environment variable still has the user''s login
name.

推荐答案

dj ****** ***@snowboard.com 写道：

如何检索当前登录用户的用户名？我基本上要检查用户是否以root用户身份登录，如果没有，请退出程序。

我虽然使用了LOGNAME环境变量，但是如果是常规<用户使用了su root，环境变量仍然有用户的登录名称。

How do I retrieve the username of the currently logged in user? I
basically to check if the user is logged in as root and if not, exit
the program.

I though about using the LOGNAME environment variable, but if a regular
user used su root, the environment variable still has the user''s login
name.

这不是C问题，试试comp .unix.programmer。


Robert Gamble

This is not a C question, try comp.unix.programmer.

Robert Gamble

对不起，我以为可能有一个简单的C函数完成

这个，但我还没能找到。

Sorry, I thought there might be an easy C function that accomplishes
this, but I haven''t been able to find one yet.

dj ********* @ snowboard.com 写道：

如何检索用户名当前登录的用户？我基本上要检查用户是否以root用户身份登录，如果没有，请退出程序。

我虽然使用了LOGNAME环境变量，但是如果是常规<用户使用su root，环境变量仍然具有用户的登录名称。

How do I retrieve the username of the currently logged in user? I
basically to check if the user is logged in as root and if not, exit
the program.

I though about using the LOGNAME environment variable, but if a regular
user used su root, the environment variable still has the user''s login
name.

C中没有标准方法。最好的办法是询问与您选择的平台相关的
a新闻组，

，如comp.unix.programmer。


< OT>如果您可以假设POSIX，请查看是否

getpwuid和getuid做你想做的事。但

对它们的讨论应该在

comp.unix.programmer< / OT>


-David

There is no standard way in C. Your best bet is to ask in
a newsgroup(s) associated with your platform(s) of choice,
such as comp.unix.programmer.

<OT> If you can assume POSIX, look at whether
getpwuid and getuid do what you want. But
discussion on them should be in
comp.unix.programmer </OT>

-David

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