/proc/mounts 重定向写入参数 err

1cpuer

# {2018-03-13 09:37:20} root@localhost:/home/ubuntu/1x
# lsattr /proc/self/mounts
lsattr: Inappropriate ioctl for device While reading flags on /proc/self/mounts

# {2018-03-13 09:37:33} root@localhost:/home/ubuntu/1x
# cat 1.mount > /proc/mounts
cat: write error: Invalid argument

# {2018-03-13 09:37:51} root@localhost:/home/ubuntu/1x
# ls -l 1.mount 2.mount /proc/mounts
lrwxrwxrwx 1 root root   11 2018-03-13 09:37:56 /proc/mounts -> self/mounts
-rwxrwxrwx 1 root root 1874 2018-03-13 08:02:06 1.mount
-rw-r----- 1 root root 1874 2018-03-13 08:05:46 2.mount

# {2018-03-13 09:37:56} root@localhost:/home/ubuntu/1x
# ls -l /proc/self/mounts
-r--r--r-- 1 root root 0 2018-03-13 09:39:30 /proc/self/mounts

# {2018-03-13 09:39:30} root@localhost:/home/ubuntu/1x
#

##[是因为链接文件吗？]##