sudoers文件更改错误，root权限无法使用的解决方案

sudoers文件更改错误，root权限无法使用的解决方案

 

/etc/sudoers: syntax error near line 

sudo: parse error in /etc/sudoers near line 25 

sudo: no valid sudoers sources found, quitting 

终极解决方案： 

  www.2cto.com  

1. shift进入recovery模式 

2. 选中root账号 

3. chmod 666 /dev/null 

   mount -o remount rw / 

4. nano /etc/sudoers 

恢复本文件内容并存盘。 

 

# /etc/sudoers 

# 

# This file MUST be edited with the 'visudo' command as root. 

# 

# See the man page for details on how to write a sudoers file. 

# 

 

Defaults env_reset 

 

# Host alias specification 

 

# User alias specification 

 

# Cmnd alias specification 

 

# User privilege specification 

root ALL=(ALL) ALL 

 

# Allow members of group sudo to execute any command after they have 

# provided their password 

# (Note that later entries override this, so you might need to move 

# it further down) 

%sudo ALL=(ALL) ALL 

# 

#includedir /etc/sudoers.d 

 

# Members of the admin group may gain root privileges 

%admin ALL=(ALL) ALL