su -c tcpdump says permission denied . Solution: Check Magisk → Superuser. Is Termux listed? If yes, long-press and revoke, then re-grant. If no, you may need to install a su binary. Try pkg install tsu (a wrapper script).
pkg list-repositories You should see an entry like: root https://packages.termux.org/apt/termux-root root stable Try installing tcpdump , a classic network diagnostic tool. root repo termux
pkg install termux-keyring pkg update Commands run, but see SELinux: avc: denied errors. Solution: That’s normal—Android’s SELinux is strict. You can temporarily set setenforce 0 (not recommended for daily use) or find root tools that respect SELinux contexts. Real-World Use Case: Wi-Fi Scanner Script Let’s put it all together. Here’s a simple bash script that scans nearby Wi-Fi networks using iw from the root repo: su -c tcpdump says permission denied
#!/data/data/com.termux/files/usr/bin/bash echo "Scanning Wi-Fi networks (requires root)..." su -c "iw dev wlan0 scan" | grep -E "SSID:|signal:" | paste -d " " - - Save as wifi_scan.sh , run chmod +x wifi_scan.sh , then execute ./wifi_scan.sh . You’ll see a clean list of SSIDs and signal strengths—a true system-level tool running inside Termux. The Termux Root Repository transforms your device from a sandboxed Linux toy into a legitimate system administration terminal. It’s perfect for ethical hacking practice, device forensics, deep system maintenance, or simply learning how Android’s Linux kernel works. If yes, long-press and revoke, then re-grant
pkg update && pkg upgrade -y This package doesn’t install actual tools—it adds the repository URL and GPG key to Termux’s sources list.
Termux provides a standard Linux file hierarchy, package management ( pkg ), and a familiar environment. The root repo bridges the gap between Android’s unique utilities and standard Linux tools.