Android Debug Bridge. A command-line tool that lets you communicate with an Android device. It runs as a client-server model. Without ADB, you cannot send shell commands from your PC.
adb devices
If you are trying to fix "Permission Denied" inside Android/data , try this standard Shizuku command instead: Android Debug Bridge
The trend is moving toward as the primary method, making the adb shell sh command even more convenient. In Android 14 and 15, wireless debugging is becoming more stable. Without ADB, you cannot send shell commands from your PC
Before execution, verify the file exists using ls : Before execution, verify the file exists using ls
On Android 11+, ADB can still read /storage/emulated/0/Android/data/<package>/ , the script must be placed there by the Shizuku app itself (which it does during installation). If you manually create it, you may get permission denied .