修改文件/etc/login.defs
[root@linux ~]# cat /etc/login.defs |grep -v "#"
MAIL_DIR /var/spool/mail
PASS_MAX_DAYS 99999 ---过期时间
PASS_MIN_DAYS 0 ---最短时间
PASS_MIN_LEN 5
PASS_WARN_AGE 7
UID_MIN 500 ---UID最小值
UID_MAX 60000
GID_MIN 500 ---GID最小值
GID_MAX 60000
CREATE_HOME yes ---是否创建家目录
UMASK 077
USERGROUPS_ENAB yes
ENCRYPT_METHOD SHA512
