Ubuntu 修改sudoers之后无法用sudo怎么恢复

进入终端

键入

pkexec visudo

修改sudoer.temp

实例如下

#
# 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_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"


# Host alias specification


# User alias specification


# Cmnd alias specification


# User privilege specification
root ALL=(ALL:ALL) ALL


# Members of the admin group may gain root privileges
%admin 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

 secure path 根据需要填写

CRTL+x退出，退出时保存。