ubuntu下设置root权限不用输入密码

cd /etc

sudo gedit sudoers

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

# Members of the admin group may gain root privileges
%admin ALL=(ALL) NOPASSWD:ALL

# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) NOPASSWD:ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d

修改root admin sudo ALL=(ALL:ALL) ALL 为 ALL=(ALL:ALL) NOPASSWD:ALL