sudoers檔案更改錯誤，root許可權無法使用的解決方案
阿新 • • 發佈：2019-02-11
/etc/sudoers: syntax error near line
sudo: parse error in /etc/sudoers near line 25
sudo: no valid sudoers sources found, quitting
終極解決方案：
1. shift進入recovery模式
2. 選中root賬號
3. chmod 666 /dev/null
mount -o remount rw /
4. nano /etc/sudoers
恢復本檔案內容並存盤。
# /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
參考：http://psychocats.net/ubuntu/fixsudo
http://my5622576.iteye.com/blog/662158
sudo: parse error in /etc/sudoers near line 25
sudo: no valid sudoers sources found, quitting
終極解決方案：
1. shift進入recovery模式
2. 選中root賬號
3. chmod 666 /dev/null
mount -o remount rw /
4. nano /etc/sudoers
恢復本檔案內容並存盤。
# /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
參考：http://psychocats.net/ubuntu/fixsudo
http://my5622576.iteye.com/blog/662158