# 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 60 #密码最大有效期,此处参数PASS_MAX_DAYS为60,表示60天后,密码会过期。99999表示永不过期。
PASS_MIN_DAYS 0 #两次修改密码的最小间隔时间,0表示可以随时修改账号密码
PASS_MIN_LEN 8 #密码最小长度,对于root无效
PASS_WARN_AGE 7 #密码过期前多少天开始提示
#
# Min/max values for automatic uid selection in useradd
#
UID_MIN 500
UID_MAX 60000
UID_MIN #用户ID的最小值
UID_MAX #用户ID的最大值
#
# Min/max values for automatic gid selection in groupadd
#
GID_MIN 500
GID_MAX 60000
GID_MIN #组ID最小值
GID_MAX #组ID最大值
#
# If defined, this command is run when removing a user.
# It should remove any at/cron/print jobs etc. owned by
# the user to be removed (passed as the first argument).
#
#USERDEL_CMD /usr/sbin/userdel_local
USERDEL_CMD #默认注释状态,如果定义了该变量,表示当删除一个user时,应删除/打印/ cron的工作等所拥有的用户被删除(作为第一个参数传递)。
#
# If useradd should create home directories for users by default
# On RH systems, we do. This option is overridden with the -m flag on
# useradd command line.
#
CREATE_HOME yes
CREATE_HOME #表示是否创建用户home目录。
# The permission mask is initialized to this value. If not specified,
# the permission mask will be initialized to 022.
UMASK 077
UMASK #权限掩码初始化值
# This enables userdel to remove user groups if no members exist.
#
USERGROUPS_ENAB yes
USERGROUPS_ENAB #该参数启用,表示userdel删除用户时,如果该用户用户组如果没有成员存在,则会删除该用户组
# Use MD5 or DES to encrypt password? Red Hat use MD5 by default.
MD5_CRYPT_ENAB yes
ENCRYPT_METHOD MD5
ENCRYPT_METHOD #表示用户密码加密方式,此处表示用MD5加密密码
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