root@debian:/home/debian8# cat  /etc/sudoers## This file MUST be edited with the 'visudo' command as root.## Please consider adding local content in /etc/sudoers.d/ instead of# directly modifying this file.## See the man page for details on how to write a sudoers file.#Defaults    env_resetDefaults    mail_badpassDefaults    secure_path=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin# Host alias specification# User alias specification# Cmnd alias specification# User privilege specificationroot    ALL=(ALL:ALL) ALL# Allow members of group sudo to execute any command%sudo   ALL=(ALL:ALL) ALL# See sudoers(5) for more information on #include directives:includedir /etc/sudoers.d The 27th line is only removed a chracter #,the primitive format is as below.#includedir /etc/sudoers.d I just remove the # character.root@debian:/home/debian8# ls  /etc/sudoers.dmyRules  READMEroot@debian:/home/debian8# cat  /etc/sudoers.d/myRulesdebian8  ALL=(ALL:ALL) NOPASSWD:ALLHow to fix it?
sudo: parse error in /etc/sudoers near line 27
sudo
#includedir /etc/sudoers.d is not a comment, #includedir is a directive. The hash sign is part of it. Just read it.