Setup android-tools on Fedora 25
Install Android tools
sudo dnf install android-tools
Setup udev rules
sudo cp /usr/share/doc/android-tools/51-android.rules /etc/udev/rules.d/
Enable and Start adb
sudo systemctl enable adb
sudo systemctl start adb
To backup
adb backup -f ~/backup-org.fedorahosted.freeotp.adb org.fedorahosted.freeotp
To Restore
adb restore ~/backup-org.fedorahosted.freeotp.adb