ADB » History » Version 10
Denis 'GNUtoo' Carikli, 11/09/2020 07:03 PM
It revokes all computer's not just one
1 | 1 | Paul Kocialkowski | h1. ADB |
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3 | 9 | Denis 'GNUtoo' Carikli | {{toc}} |
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5 | 1 | Paul Kocialkowski | h2. Installing ADB |
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7 | 8 | Denis 'GNUtoo' Carikli | See the [[ToolsInstallation]] page for how to install adb. |
8 | 1 | Paul Kocialkowski | |
9 | 5 | Wolfgang Wiedmeyer | h2. Enabling ADB |
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11 | In the settings, open *Developer options*. In the Debugging section, enable *Android debugging*. |
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13 | 1 | Paul Kocialkowski | h2. Authorizing the device |
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15 | In order to allow your host computer to access ADB on the device, it must be allowed on the device. A window should pop up when connecting USB, asking whether to allow USB debugging. |
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16 | 2 | Paul Kocialkowski | *Note: when booting with USB plugged in, the window doesn't pop up and you have to disconnect and reconnect the USB cable to see it happen.* |
17 | 1 | Paul Kocialkowski | |
18 | h2. Accessing root shell |
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20 | Once allowed, you can access the device shell using: |
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21 | 4 | Wolfgang Wiedmeyer | |
22 | 1 | Paul Kocialkowski | <pre> |
23 | adb shell |
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24 | </pre> |
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26 | 5 | Wolfgang Wiedmeyer | The shell is running as an unprivileged user. |
27 | 1 | Paul Kocialkowski | |
28 | 6 | Denis 'GNUtoo' Carikli | To allow root access, open the *Developer options* in the settings. There, press *Root access*. In the pop-up menu, select either *ADB only* or *Apps and ADB*. A window with "Allow root access?" might pop up and explains the security tradeoffs of enabling root access. After reading the text, select OK to enable root access. |
29 | 5 | Wolfgang Wiedmeyer | |
30 | To finally gain root access, use: |
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32 | 1 | Paul Kocialkowski | <pre> |
33 | adb root |
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34 | </pre> |
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36 | 4 | Wolfgang Wiedmeyer | The following shells will then be run as root. |
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38 | 1 | Paul Kocialkowski | h2. Modifying the system partition |
39 | 4 | Wolfgang Wiedmeyer | |
40 | 5 | Wolfgang Wiedmeyer | Replicant is installed on the system partition. By default with most devices, this partition is mounted as read-only and can't be modified. |
41 | 4 | Wolfgang Wiedmeyer | You can mount the partition as writable filesystem using: |
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43 | <pre> |
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44 | adb remount |
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45 | </pre> |
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47 | Files under @/system/@ can now be edited. |
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48 | 9 | Denis 'GNUtoo' Carikli | |
49 | 10 | Denis 'GNUtoo' Carikli | h2. Revoking all computer's USB debugging permissions |
50 | 9 | Denis 'GNUtoo' Carikli | |
51 | Sometimes, you need to use @Always allow from this computer@ to give a computer more permanent USB debugging permissions. This for instance the case in the [[BackupTheEFS]] instructions. |
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53 | 1 | Paul Kocialkowski | However once you are done with what needs such permissions, you might want to revoke the permissions if you don't need anymore, to increase security. |
54 | 9 | Denis 'GNUtoo' Carikli | |
55 | 10 | Denis 'GNUtoo' Carikli | To do that you can select @Revoke USB debugging authorizations@ in @Developer options@ in the Settings (@Settings@ > @Developer options@ > @Revoke USB debugging authorizations@). |