SG(1) 用户命令 SG(1)

sg - 以不同的组 ID 执行命令

sg [-] [group [-c ] command]

The sg command works similar to newgrp but accepts a command. The command will be executed with the /bin/sh shell. With most shells you may run sg from, you need to enclose multi-word commands in quotes. Another difference between newgrp and sg is that some shells treat newgrp specially, replacing themselves with a new instance of a shell that newgrp creates. This doesn't happen with sg, so upon exit from a sg command you are returned to your previous group ID.

The following configuration variables in /etc/login.defs change the behavior of this tool:

SYSLOG_SG_ENAB (boolean)

Enable "syslog" logging of sg activity.

/etc/passwd
用户账户信息。

/etc/shadow

安全用户账户信息。

/etc/group

组账户信息。

/etc/gshadow

安全组账户信息。

id(1), login(1), newgrp(1), su(1), gpasswd(1), group(5), gshadow(5).
2020-01-23 shadow-utils 4.8.1