nevereverever.de/public_ansi/rsync-android

SETUP TERMUX
 
Install Termux using F-Droid.
 
Update software repos.
 
pkg update
 
Grant file access permissions using.
 
termux-setup-storage
 
ESTABLISHING AN SSH CONNECTION
 
If network (such as eduroam) is blocking ssh trafic between machines,
open a Wi-Fi Hotspot on your Linux machine and connect the Android
device to it before using rsync or ssh .
 
Configuring Android
 
Install the openssh server on Termux.
 
pkg install openssh
 
Start the ssh server daemon.
 
sshd
 
Get the ip address of the Android machine (in the Hotspot).
 
ifconfig
 
Warning: cannot open /proc/net/dev (Permission denied). Limited output.
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
 
rmnet0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1280
inet 10.200.157.166 netmask 255.255.255.0 destination 10.200.157.166
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
 
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.42.0.200 netmask 255.255.255.0 broadcast 10.42.0.210
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
 
In this case 10.42.0.200.
 
The ssh server should now be running and listening on port 8022. You can
check by running
 
nmap -Pn <ip_address>
 
For me <ip_address> whould be 10.42.0.200.
 
Get the username.
 
whoami
 
u0_a700
 
Set a password for this user.
 
passwd
 
Connecting to Android via ssh
 
Make sure you have an ssh key pair on the Linux system. If not generate
one using ssh-keygen .
 
Now connect to Android by ssh .
 
ssh <username>@<ip_address> -p 8022
 
SYNCRONISING FILES WITH RSYNC
 
Install rsync on Termux and Linux. Make sure to keep your own openssl
config.
 
pkg install rsync
 
Now on your Linux machine, syncronise your Music library with rsync.
 
rsync -av -e "ssh -p 8022" ~/Music <username>@<ip_address>:/data/data/com.termux/files/home/storage/music
 
Refreshing the Android MediaStore
 
Android uses a Database to store files. In order to play your music,
this database needs to be refreshed. This can be achieved by a reboot or
by using adb to manually refresh it.
 
sudo dnf install adb
 
Connect the Android device via USB and see if it is listed.
 
adb devices
 
If it is, restart adb in TCP mode with port 5555
 
adb tcpip 5555
Connect to the device using its .
 
adb connect <ip_address>
 
Refresh MediaStore.
 
adb shell am broadcast -a android.intent.action.MEDIA_SCANNER_SCAN -d file:///data/data/com.termux/files/home/storage/music/