ADB Shell giving bad mode when executing chmod (under su)

Question

I'm having an issue related to the Android ADB Shell. When I try to execute the command chmod he gives me a "Bad Mode". I don't get it why. I'm sure I'm executing under "su", as represented by the '#'. Anyone have any idea why this is happening, and how to make it work? Thanks in advance.

chmod o+rw /dev/ttyS1

did you try `chmod 600 /dev/ttyS1` or other octal values appropriate for the permissions you want to use? Good luck. — shellter, Feb 15 '12 at 03:36
Thank you, I managed to open with 666. Post it as answer so I can accept. — Comic Sans MS Lover, Feb 15 '12 at 12:45

score 33 · Accepted Answer · answered Feb 15 '12 at 13:27

33

Bad mode means the permissions on the file are not set correctly, and some versions of chmod don't understand the o+rw notation. All chmods understand octal notation, where 6=read/write, so try

 chmod 666 /dev/ttyS1

I hope this helps.

answered Feb 15 '12 at 13:27

shellter

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score 0 · Answer 2 · answered Sep 08 '22 at 09:36

0

use /system/xbin/busybox chmod

example:

busybox chmod u+s /system/xbin/busybox

answered Sep 08 '22 at 09:36

CS QGB

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ADB Shell giving bad mode when executing chmod (under su)

2 Answers2