疑难杂症——bash: /dev/null: Permission denied
2017-08-27 13:37 云物互联 阅读(345) 评论(0) 编辑 收藏 举报描述
在使用 Devstack 的时候需要时常切换用户su stack
,此时会触发错误:
root@mickeyfan-dev:~# su stack
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
bash: /dev/null: Permission denied
一般而言,Permission denied 问题可以通过 reset 权限 chmod 666 /dev/null
来解决,但在 Ubuntu 中,系统会自动将设备的权限还原为 420 crw--w---- 1 root tty 1, 3 Aug 26 11:46 /dev/null
。所以常用的方法并不能解决该问题。
解决方案
-bash: /dev/null: Permission denied
此时,你需要删除 /dev/null
文件,并重新创建它:
rm -f /dev/null; mknod -m 666 /dev/null c 1 3
转载请注明作者:JmilkFan 范桂飓