本人菜鸟，想关独显遇到问题求大神！！！！！！！

[mianhuatang]

mianhuatang@ubuntu:~$ sudo chmod 777 /etc/rc.local
mianhuatang@ubuntu:~$ sudo cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Pwr:0000:01:00.0
mianhuatang@ubuntu:~$ echo OFF>/sys/kernel/debug/vgaswitcheroo/switch
bash: /sys/kernel/debug/vgaswitcheroo/switch: 权限不够
mianhuatang@ubuntu:~$ su root
密码：
root@ubuntu:/home/mianhuatang# sudo echo OFF>/sys/kernel/debug/vgaswitcheroo/swtich
bash: /sys/kernel/debug/vgaswitcheroo/swtich: 权限不够
root@ubuntu:/home/mianhuatang# ^C
root@ubuntu:/home/mianhuatang#

[mianhuatang]

权限不够怎么回事？

[枫叶饭团]

重定向用tee就能用sudo提权了

[mianhuatang]

求代码

[枫叶饭团]

代码： 全选

echo OFF|sudo tee /sys/kernel/debug/vgaswitcheroo/swtich

[mianhuatang]

感谢