SEEDAndroid Recovery User Manual
User Manual:
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User Manual for Recovery OS
1 Boot into Recovery OS
To boot into recovery OS, you may press and hold left shift button during the booting
process (after seeing the VirtualBox splash screen). Then GRUB menu will show up.
Use up and down arrow keys to move the highlighted line to “Ubuntu” then press enter.
2 Log into Recovery OS
After recovery OS boots up, it will ask for login. There are two accounts predefined in
the recovery OS:
Username
Password
Privilege
root
root
root
seed
dees
normal, sudo
For most tasks in recovery OS, you will need root privilege. So you may want to login
as root user directly. If you are afraid of destroying the system mistakenly, you may
login as a normal user. But then you need to add “sudo” before some privileged
operations.
After login, a shell prompt will appear.
3 Shutdown/Reboot
You could simply close the VM window and choose “power off” to shutdown the
recovery OS. Similarly, you could choose Device -> Reset menu item to reboot the
machine. No harm is assumed under such operation.
If you are looking for more legitimate way to do this, please use following commands
(root or sudo):
Shutdown: shutdown -P now
Roboot: reboot
4 Available Text Editors
There are text editors on this system.
nano: easy to use, recommended for text editing
vi: not recommended, unless you already know what vi is and like to use it.
For more information, please use man pages: man nano & man vi.
5 File Transfer and remote control
You may need to transfer files to or from the recovery OS. We have ssh daemon (sshd)
running on the recovery OS, so you may use scp or sftp commands to transfer files. To
do the file transfer, you need another VM (e.g. our SEED Ubuntu VM) attached to the
same “NAT network”. Please refer to <DOCUMENT> to get how to configure the “NAT
Network” adapter on VirtualBox.
Use ifconfig command to check the IP address on the recovery OS. We will use
<recovery ip> to refer this in following parts.
Then on the other side (we will use SEED Ubuntu VM here), you can do the followings:
NOTE: when the first time you attempt to connect the recovery OS through
ssh/scp/sftp, a message will show as following
You will need to type “yes” and return. This is a normal confirmation when you first
connect to some server.
For all these three commands, you will have a Linux Manual Page for each of them. Try
“man ssh”, “ man scp” and “man sftp” for more information. In this section,
some examples are provided to help you use these commands.
ssh
The ssh command allow you to remotely control the recovery OS. It will provide you a
shell prompt on your SEEDUbuntu16.04_x32 VM. You could type following command
to login as “seed” user on recovery OS remotely
ssh seed@<recovery ip>
Then you will be asked about the password (dees) of recovery account.
You are not allowed to login as root via ssh.
scp
The scp (secure copy) command is the remote version of Unix’s cp command. It uses
ssh for remote copies.
Examples:
1. Copy a.txt from SEEDUbuntu16.04_x32 to recovery OS (located in /home/seed/,
aka home directory for seed)
scp ./a.txt seed@<recovery ip>
2. Copy b.txt from /home/recovery/test/ on recovery OS to
SEEDUbuntu16.04_x32
scp seed@<recovery ip>:/home/seed/test/b.txt ./
You will be asked the password (dees) of recovery account when you run these
commands.
sftp
The sftp (secure ftp) is an ftp client interface built on ssh. To start, type
sftp seed@<recovery ip>
Then after login, you could use following commands:
cd <directory>
change current working directory
ls
list files under current directory
put <file> [destination]
upload a file to remote side
<file> is relative to the path where you execute sftp on SEEDUbuntu
If [destination] not specified, it will be current working directory on remote
(recovery) side
get <file> [destination]
download a file from remote side
<file> is relative the current working path on remote side.
If [destination] not specified, it will be the path where you start sftp on
SEEDUbuntu.
