Linux用户口令是什么

这篇文章主要介绍"Linux用户口令是什么"，在日常操作中，相信很多人在Linux用户口令是什么问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"Linux用户口令是什么"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

以前别人问做USER口令控制时，推荐别人使用/etc/shadow,后来想想，好好别的地方也行，这一翻，发现以下也可以控制。

[root@linux1 init.d]#            more /etc/login.defs   # *REQUIRED*  #   Directory where mailboxes reside, _or_ name of file, relative to the  #   home directory.  If you _do_ define both, MAIL_DIR takes precedence.  #   QMAIL_DIR is for Qmail  #  #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  PASS_MIN_DAYS   0  PASS_MIN_LEN    5  PASS_WARN_AGE   7     #  # Min/max values for automatic uid selection in useradd  #  UID_MIN                   500  UID_MAX                 60000     #  # Min/max values for automatic gid selection in groupadd  #  GID_MIN                   500  GID_MAX                 60000     #  # 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     #  # 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     [root@linux1 init.d]#

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