Fix of sudoers access right after mis-change

? sudo:/etc/sudoers is mode 0777, should be 0440"problem Solving method

Ubuntu Enter single-user mode, modify sudoers permissions, modifying Root Password

1, restartUbuntu, and then long pressShiftEnterGrubmenu;
2, selectRecovery Mode(Recovery mode), press"E"key into the edit page (note that this is not a carriage return, just presse)
3, thero Recovery NomodesetinsteadRW Single Init=/bin/bash
4, pressctrl+xEnter single-user mode, which is the current userRoot;
5, to/ etcchanges under directorysudoersPermissions:chmod 0440 sudoers, or can be added at the same timeRootpassword, next time will not be so troublesome;
6, pressCtrl+alt+delRestart ;
Reference:http://blog.csdn.net/gudaoqianfu/article/details/7254700

Fix of sudoers access right after mis-change