9.2 用户管理相关的文件
9.2.1 /etc/security/environ
9.2.2 /etc/security/lastlog
9.2.3 /etc/security/limits
9.2.4 /etc/security/user
9.2.5 /usr/lib/security/mkuser.default
9.2.6 /usr/lib/security/mkuser.sys
9.2.7 /etc/passwd
9.2.8 /etc/security/passwd
9.2.9 /etc/security/login.cfg
9.2.10 /etc/utmp、/var/adm/wtmp、/etc/security/failedlogin
9.2.11 /etc/motd
9.2.12 /etc/environment
9.2.13 /etc/profile和$HOME/.profile
