SimpleSSHD is an SSH2 server based on dropbear that supports scp, sftp, and rsync. It only supports public-key based authentication (no password/interactive auth). It does not use root, which means it must listen on a port over 1024 (defaults to port 2222).
Host myphone Port 2222
Voila! You can use ssh/scp/sftp/rsync to talk to your Android device!
There are three directory settings that are important for SimpleSSHD.
The first is the path for general dropbear files, which defaults to /sdcard/ssh. Most importantly, this is where authorized_keys is found. It is also where host keys wind up (they are created on demand), and where temporary files go.
Next is the path to the login shell. The default Android shell is /system/bin/sh, but you may prefer to use the one that come with busybox or whatever.
Finally is the path for the home directory, which also defaults to /sdcard/ssh. This is where your ssh session starts out, and is where .profile will be found if it is present.
There is also a place where you can put commandline options for dropbear server. The options which are hardcoded are: -R -F -p :portno. You can use \ or " to escape characters in this commandline.
SimpleSSHD is built using parts from open source projects: dropbear server, openssh (for scp and sftp-server), and rsync. Those projects in turn are based on other projects. A lot of people's work is represented here, and very little of my own.
But if you find bugs/infelicities, it's probably my fault, so email
me:
Here is the source. If you use this, email me and I'll make sure you
get the latest:
a 2014/12/22 snapshot of my
git repository
(use git clone simplesshd.git).