cd /data/data/com.termux/files
tar -zcf /sdcard/termux-backup.tar.gz home usr
termux-setup-storage
cd /data/data/com.termux/files
tar -zxf /sdcard/termux-backup.tar.gz --recursive-unlink --preserve-permissions
https://www.sqlsec.com/2018/05/termux.html