The root user's permission to modify files in the media folder is invalid. rootmedia

The root user's permission to modify files in the media folder is invalid. rootmedia

Http://blog.csdn.net/pipisorry/article/details/39649699

Problem:

I want to execute a program written by myself in the media folder, but cannot execute

The owner of the media folder is root.

root@ubuntu:/#ls -ld /mediadrwxr-xr-x 5 root root 1024 Sep 29 00:08 /media

So I enter commands on the terminal as root. Chmod a + x 1, No response after the carriage return, and the query of the folder's properties has not changed. Why?

Root @ ubuntu:/media/000b089d424696f/mine/C ++/POJ/CCF # cp RevNum. cpp 1. cpproot @ ubuntu:/media/000b089d424696f/mine/C ++/POJ/CCF # vim 1. cpproot @ ubuntu:/media/000b089d424696f/mine/C ++/POJ/CCF # gcc-o 1. cpproot @ ubuntu:/media/000b089d424696f/mine/C ++/POJ/CCF #. /1 bash :. /1: insufficient permissions. root @ ubuntu: /media/000B089D0000696F/mine/C ++/POJ/CCF # ls-l 1-rw ------- 1 pipi 8463 Sep 29 1root @ ub Untu:/media/000b089d424696f/mine/C ++/POJ/CCF # chmod a + x 1root @ ubuntu: /media/000b089d424696f/mine/C ++/POJ/CCF # ls-l 1-rw ------- 1 pipi 8463 Sep 29 1 => the permission has not changed, still unable to execute !!!

Solution:

1. log on to the GUI as root

For logon methods, see [add, delete, and modify users in linux]

2. Use mount to solve the problem

Sudo umount/media/administrator/movie
Sudo mount-o rw/dev/sda7/media
When media is mounted, sudo umount/media is used for removal.

Ps:

The reason why many files in the media folder are read-only:

The reason for read-only is that the quick Restart Technology of win8 after enabling the other system to write the partition will lead to data loss, so ntfs-3g (ntfs support module on linux) by default prohibit ntfs write operations
In addition, do not modify permissions for folders under /.

Simple mount usage:
Root permission required
Mount partition mount point
Partition: similar to/dev/sda1
Mount point: destination folder, preferably empty

Example:Mount the first partition (sda1) to/home/xxx/
Mount/dev/sda1/home/xxx/
Unmount only umount mount points
(Add sudo with the above command)
In addition, the/file should not be modified
Media (null) Permission
Sudo chmod 755/media

From: http://blog.csdn.net/pipisorry/article/details/39649699

Ref: Command for modifying folder Permissions

How to change the folder permission to root, 755

On the phone, press and hold the re folder, permissions permission, 755 is rwxr-xr-x, then press and hold change owner, and select 0.
You can use adb shell + chmod and chown on your computer.

In Linux, how does one copy a folder under the root user to another user?

First

Su root
Then
Cp/root/folder/home/user name/folder
Last

Chown-R user name: User Group/home/user name/folder
Exit