On LineageOS 23.2 with Magisk, you don’t have a traditional /etc/sudoers file (since Android is not a full Unix system), but you can achieve similar functionality for running specific commands as root from Termux using the following approaches:

1. Using sudo in Termux

Termux can install a sudo package, which allows you to run commands as root if you have Magisk installed (which provides root access).

Steps:

1. Install sudo in Termux:

   bash

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   pkg install tsu

   tsu is a Termux-specific sudo alternative.

2. Add a Rule for Specific Commands:

   • Edit the sudoers file for Termux (located at /data/data/com.termux/files/usr/etc/sudoers).
   • Add a line like this to allow a specific user (e.g., u0_a123) to run a specific command as root:
     text

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     u0_a123 ALL=(root) NOPASSWD: /path/to/your/command

   • Replace u0_a123 with your Termux app’s user ID (find it with id in Termux).

3. Set Permissions:

   • Ensure the file is owned by root and has the correct permissions:
     bash

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     chmod 440 /data/data/com.termux/files/usr/etc/sudoers
     chown root:root /data/data/com.termux/files/usr/etc/sudoers

4. Usage:

   • Run your command with:
     bash

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     sudo /path/to/your/command

2. Using Magisk’s su Directly

If you want to allow Termux to run su without a password for specific commands, you can use Magisk’s built-in su rules.

Steps:

1. Edit Magisk’s su Rules:

   • Open the Magisk app.
   • Go to Superuser > Superuser settings > Policy > Add rule.
   • Add a rule like:
     text

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     su

2. Allow Termux to Use su:

   • In Termux, run:
     bash

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     su -c "your_command"

   • This will prompt for root access, but you can automate it if you trust the command.

3. Using Termux’s termux-setup-storage and termux-chroot

If you need to run commands in a more controlled environment, you can use Termux’s chroot or bind mounts.

Summary Table

Which method do you want to use? If you need help setting up a specific rule or troubleshooting, let me know!