id linux 显示用户名 id -nu

ysdaniel

于 2011-11-17 11:02:55 发布

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分类专栏： Shell 文章标签： linux security user output disk c

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本文介绍了如何使用id命令来打印用户和组信息，包括UID、GID、组名、组ID、上下文等，并详细解释了命令的各种选项。

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id --help
Usage: id [OPTION]... [USERNAME]
Print user and group information for the specified USERNAME,
or (when USERNAME omitted) for the current user.

  -a ignore, for compatibility with other versions
  -Z, --context print only the security context of the current user
  -g, --group print only the effective group ID
  -G, --groups print all group IDs
  -n, --name print a name instead of a number, for -ugG
  -r, --real print the real ID instead of the effective ID, with -ugG
  -u, --user print only the effective user ID
   --help display this help and exit

--version output version information and exit

[root@localhost proc]# id
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

[root@localhost proc]# id -un
root