The Android documentation contains the following description of the adb grant and adb revoke commands.
grant <PACKAGE_PERMISSION>
Grant permissions to applications. Only optional permissions the application has declared can be granted.
revoke <PACKAGE_PERMISSION>
Revoke permissions to applications. Only optional permissions the application has declared can be revoked.
Can anybody please give an example of the correct syntax to use them?
I assume that would be a permission like android.permission.WRITE_EXTERNAL_STORAGE, or perhaps just WRITE_EXTERNAL_STORAGE. Well I tried those, and several others and I cannot get it to work.
I also tried (to no avail) several combinations of package and permission, which makes more sense to me (this sounds like a command that would modify a permission on one package, not all)
To Add:
adb shell pm grant com.name.app android.permission.READ_PROFILE
To Remove:
adb shell pm revoke com.name.app android.permission.READ_PROFILE
This changed at the release of Android M, so in Lollipop (at original time of writing answer) you needed to do adb shell first.
adb shell
pm grant com.name.app android.permission.READ_PROFILE
A full list of permissions can be found here. If you have android build tools set up you can see what permissions the app is using. First use
adb shell pm list packages -f
Then copy the package to you computer:
adb pull /path/to/package/from/previous/step.apk
Then get permissions:
aapt d permissions path/to/app/on/computer.apk
If you happen to not know the name of permission or want to clear all permissions you can use
adb shell pm reset-permissions your.package.name
So here's a little command line (mac/linux) to grant your app all of the permissions it requires from the command line.
aapt d permissions ./path/to/your.apk \
| sed -n \
-e "s/'//g" \
-e "/^uses-permission: name=android.permission\./s/^[^=]*=//p" \
| xargs -n 1 adb shell pm grant com.your.package
来源：https://stackoverflow.com/questions/16410167/how-do-i-use-adb-grant-or-adb-revoke