Android modifies the file attributes (u960s deletes the shutter sound instance)

I have a ZTE u960s mobile phone in my hand. I already have the root permission, but I want to delete the shutter sound and use the re File Manager to delete system/Media/Audio/UI/Camera_click.ogg,However, the operation failed.

I am confused. Execute the following operations to view the file attributes.

ADB Shell

Su

CD system/Media/Audio/UI

Ls-l

Oh, it turns out to beCamera_click.oggThe file property isRwx r --Only the read permission is available, but I think I have executed the su command, Rm-R
Camera_click.ogg should be able to be deleted successfully, but the prompt is that the permission is insufficient.

 

Is there any xuanjicang,

I returned to the ADB shell layer.

Run

Mount

Check that the system folder is read-only.

 

Rootfs/rootfs Ro, relatime 0 0
Tmpfs/dev tmpfs RW, relatime, mode = 755 0 0
Devpts/dev/PTS devpts RW, relatime, mode = 600 0 0
Proc/proc RW, relatime 0 0
Sysfs/sys sysfs RW, relatime 0 0
Tmpfs/mnt/ASEC tmpfs RW, relatime, mode = 755, gid = 1000 0 0
Tmpfs/mnt/OBB tmpfs RW, relatime, mode = 775, gid = 1000 0 0
/Dev/block/mtdblock11/system yaffs2 R, relatime 0 0 // only read permission
/Dev/block/mtdblock12/Data yaffs2 RW, nosuid, nodev, relatime 0 0
/Dev/block/mtdblock10/cache yaffs2 RW, nosuid, nodev, relatime 0 0
/Dev/block/mtdblock14/Marvell yaffs2 RW, relatime 0 0
/Dev/block/mtdblock13/data/Linux/Marvell/NVM yaffs2 RW, nosuid, nodev, relatime 0 0
Tmpfs/tmp tmpfs RW, relatime, mode = 755, uid = 1000, gid = 1000 0 0

 

Run Mount-O remount-RW/dev/block/mtdblock11/System

Rootfs/rootfs Ro, relatime 0 0
Tmpfs/dev tmpfs RW, relatime, mode = 755 0 0
Devpts/dev/PTS devpts RW, relatime, mode = 600 0 0
Proc/proc RW, relatime 0 0
Sysfs/sys sysfs RW, relatime 0 0
Tmpfs/mnt/ASEC tmpfs RW, relatime, mode = 755, gid = 1000 0 0
Tmpfs/mnt/OBB tmpfs RW, relatime, mode = 775, gid = 1000 0 0
/Dev/block/mtdblock11/system yaffs2 RW, relatime 0 0 // Read Write Permission is available
/Dev/block/mtdblock12/Data yaffs2 RW, nosuid, nodev, relatime 0 0
/Dev/block/mtdblock10/cache yaffs2 RW, nosuid, nodev, relatime 0 0
/Dev/block/mtdblock14/Marvell yaffs2 RW, relatime 0 0
/Dev/block/mtdblock13/data/Linux/Marvell/NVM yaffs2 RW, nosuid, nodev, relatime 0
0
Tmpfs/tmp tmpfs RW, relatime, mode = 755, uid = 1000, gid = 1000 0 0

 

Now, you can use the previous command RM to delete the shutter sound file. My u960s photo was quiet.

 

Reference:

Http://dev.10086.cn/cmdn/wiki/index.php? Doc-view-4608.html

 

Http://www.apkdd.com/20337