[Root] Check root and reboot recovery mode (script?) - Android Q&A, Help & Troubleshooting

I have a samsung A50 stock rooted (Magisk + TWRP).
But Now, on the Android rooted, you mustn't reboot your device otherwise you lost you root.
You must only reboot in the recovery mode or just shutdown your device.
But it's a probleme. Because I often forget about this problem and I reboot and lose my root.
And, I use my phone without realizing that my afWall firewall (root only) is disabled for example.
So I am looking for a solution to detect at startup if my phone is rooted, and if it is not, restart it automatically in the recovery mode.
I think maybe a sh script could do this but I don't know how or where to put it to boot.
Thank you very much

---

laclac said:
I have a samsung A50 stock rooted (Magisk + TWRP).
But Now, on the Android rooted, you mustn't reboot your device otherwise you lost you root.
You must only reboot in the recovery mode or just shutdown your device.
But it's a probleme. Because I often forget about this problem and I reboot and lose my root.
And, I use my phone without realizing that my afWall firewall (root only) is disabled for example.
So I am looking for a solution to detect at startup if my phone is rooted, and if it is not, restart it automatically in the recovery mode.
I think maybe a sh script could do this but I don't know how or where to put it to boot.
Thank you very much
Click to expand...
Click to collapse
Testing for a rooted Android is difficult to do, it is almost impossible if Android is rooted via Magisk.

---

I don't really write a script but it is not possible to have:
Code:
try{
cd "/system/"
}catch (e){
#no root
shutdown();
}

---

@laclac
2 examples useable in a SH-script:
Code:
if [ "$(whoami)" == "root" ] ; then
# you are root
if [ -f "/system/bin/recovery" ]; then
$(/system/bin/reboot recovery)
fi
else
# you are not root
fi
Code:
if [ "$(id -u)" -eq 0 ]; then
# you are root
if [ -f "/system/bin/recovery" ]; then
$(/system/bin/reboot recovery)
fi
else
# you are ordinary user
fi
BTW:
You also may use this JAVA script as template:
https://github.com/rickyazhari/root...a/com/neki/rootchecker/RootCheckerPlugin.java
Can easily be rewrittten as SH script, IMO.