Linux密码复杂度设置

修改/etc/login.defs文件

#
#QMAIL_DIR Maildir
MAIL_DIR /var/spool/mail
#MAIL_FILE .mail

# Password aging controls:
#
# PASS_MAX_DAYS Maximum number of days a password may be used.
# PASS_MIN_DAYS Minimum number of days allowed between password changes.
# PASS_MIN_LEN Minimum acceptable password length.
# PASS_WARN_AGE Number of days warning given before a password expires.
#
PASS_MAX_DAYS 99999                                                //密码最长过期时间
PASS_MIN_DAYS 0                                                         //密码最短过期时间
PASS_MIN_LEN 5                                                          //密码最短长度
PASS_WARN_AGE 7                                                     //密码过期警告天数

#
# Min/max values for automatic uid selection in useradd
#
UID_MIN 1000
UID_MAX 60000
# System accounts
SYS_UID_MIN 201
SYS_UID_MAX 999