How can I access my Ubuntu phone over ssh?

Question

I'm creating a Poker evaluater, but I'm having trouble figuring out how to check for "straight" combinations (I also need to know what cards made the combination).

I have a list of cards, so what I need to figure out is the following:

Does the list contain an ace or not?

If yes:

• Create a new list where ace is high.
• Create a new list where ace is low.
• Run check on both lists and return whichever has the higher count of cards that are in a straight combination.

If No:

• Run check on list and return the cards that are in a straight combination.

How to check for a straight combination:

Run through the list and check whether the current card's rank + 1 is equal to the previous card's rank.

Using this method we will run into an issue....

Take the following into consideration:

1. King
2. Queen
3. Jack
4. Three
5. Two

The result would be:

1. King = Nothing = False
2. Queen = King = True
3. Jack = Queen = True
4. Three = Jack = False
5. Two = Three = True

That result is no good, the result in that case should be: King, Queen, Jack.

I'm not sure how to put this into code in a smart way, or just in a way that would work. I have tried doing LINQ and I have tried using for loops.

Here's the card class that I have made:

Public Enum CardRank
    Two = 2
    Three = 3
    Four = 4
    Five = 5
    Six = 6
    Seven = 7
    Eight = 8
    Nine = 9
    Ten = 10
    Jack = 11
    Queen = 12
    King = 13
    Ace = 14
End Enum

Public Enum CardSuit
    Club = 1
    Diamond = 2
    Heart = 3
    Spade = 4
End Enum

Public Class Card
    Public Rank As CardRank
    Public Suit As CardSuit

#Region "Constructor"
    Sub New()

    End Sub

    Sub New(ByVal Rank As CardRank, ByVal Suit As CardSuit)
        Me.Rank = Rank
        Me.Suit = Suit
    End Sub
#End Region

    Public Overrides Function ToString() As String
        Return [Enum].GetName(GetType(CardRank), Rank) + " of " + [Enum].GetName(GetType(CardSuit), Suit)
    End Function
End Class

Copy this to quickly get started:

Dim Deck As New List(Of Card)
Dim Cards As List(Of Card) = New Card() {New Card(CardRank.King, CardSuit.Spade), New Card(CardRank.Queen, CardSuit.Heart), New Card(CardRank.Jack, CardSuit.Club), New Card(CardRank.Three, CardSuit.Spade), New Card(CardRank.Two, CardSuit.Diamond)}.ToList()

'Add deck
For Each Suit As CardSuit In [Enum].GetValues(GetType(CardSuit))
    For Each Rank As CardRank In [Enum].GetValues(GetType(CardRank))
        Deck.Add(New Card(Rank, Suit))
    Next
Next

For Each Card As Card In Cards
    Deck.Remove(Card)
Next

Maybe I'm going about this the wrong way?

EDIT: A straight is five cards of sequential rank. Note that in holdem, Aces can be high or low. EDIT: Here's how I list my cards atm. (Can be altered to fit other methods of course)

Dim tempList = Cards.GroupBy(Function(card) card.Rank).Reverse().OrderByDescending(Function(group) group.Count()).SelectMany(Function(group) group).ToList()

Solution 1

With the official final release Ubuntu for Phones ships the "android-gadget-service" tool with which you can manage adb, mtp, USB tethering and ssh.

Connect your device via USB, enable Developer Mode in:

"System-Settings->About This Phone->Developer Mode"

...and run (from your PC, make sure to have the phone screen unlocked, else adb will refuse to let you in):

adb shell android-gadget-service enable ssh

Copy your public key to the Phone:

adb shell mkdir /home/phablet/.ssh
adb push ~/.ssh/id_rsa.pub /home/phablet/.ssh/authorized_keys
adb shell chown -R phablet.phablet /home/phablet/.ssh
adb shell chmod 700 /home/phablet/.ssh
adb shell chmod 600 /home/phablet/.ssh/authorized_keys

Now you can look up your IP on the phone and use ssh to connect:

adb shell ip addr show wlan0|grep inet
ssh phablet@<IP from above command>

Solution 2

To activate ssh access entirely over wifi, without developer mode on the phone, without any special tooling on your computer and without using USB:

1. If you don't already have an ssh keypair, type ssh-keygen on your computer and follow the instructions to generate one.
2. Install the Terminal app on the phone from the App Store.

3. Open a Terminal and type (this is easier with the phone in a landscape orientation):

   sudo setprop persist.service.ssh true
   mkdir -pm700 ~/.ssh
   ip addr
   nc -l 1234 > ~/.ssh/authorized_keys
   

   (the last command will hang; this is expected)

4. Look for your phone's IP address in the Terminal as returned by the ip addr command above.

5. On your computer, type (replacing 192.0.2.1 with your phone's IP address from above):

   nc 192.0.2.1 1234 < ~/.ssh/id_rsa.pub
   

   If successful, the last command on your phone's Terminal will now succeed.

6. On your computer, type (again replacing 192.0.2.1 with your phone's IP address from above):

   ssh [email protected]
   

7. If your phone's IP address changes, you will need to use ip addr in the Terminal app on your phone again and adjust your ssh command accordingly.

Solution 3

OpenSSH server is now (as of 13-Sep-2013) pre-loaded with Ubuntu Touch install. However, it is also disabled by default. You also don't want SSH operating from root.

---

You need to type the following, using a USB connection to the device:

adb shell
su - phablet
sudo tee /etc/init/ssh.override < /dev/null

To revert to disabled

echo "manual" | sudo tee /etc/init/ssh.override

---

UPDATE: (09-Mar-2014)

The answer above is no longer current.

• As of early March 2014, while the file /etc/init/ssh.override still exists, changing its contents does not allow SSH (actually the sshd daemon) to run on startup.

• The recent builds (tested for 226, but possibly earlier) now support a new meta-flag persist.service.ssh, to allow SSH (sshd daemon) to re-start on startup.

Get to command prompt (on device)

adb shell
su - phablet

Start SSH, and set flag

sudo service ssh start
sudo setprop persist.service.ssh true

Restart device

sudo reboot

The SSH daemon should auto-start

sudo service ssh status

---

To disable SSH auto-start, change the flag:

sudo setprop persist.service.ssh false

Comments

[Admin]

Exactly the same error

[Admin]

Same error for me doing same thing - ubuntu 11.04.

[Admin]

@Malee 11.04 is end of life, you can't get help for 11.04 here because of that. Upgrade to 12.04 or newer, or to a supported release, and then we can help you fix it.

[Admin]

Ubuntu touch does not have the software center yet and updating is terminal only, which i did not do as i tried to install openssh.

[Admin]

Ok since i did not change too much yet, do you think formatting my storage and reflashing ubuntu helps?

[Admin]

Tried it, still getting the same mistake...

[Admin]

What command do you reflash with?

[Admin]

I follow the exact instructions on wiki.ubuntu.com/Touch/Install, the command is phablet-flash i will try another version now

[Admin]

Why are you using Ubuntu 11.04?

[Karl Gjertsen]

Your code shows your classes, but not how you have attempted to rank them. Do you have some more code to show?

[Starwop]

I have edited my main post, please take another look. Thank you :)

[Octopus]

why do you need to sudo everything after going su -?

[david6]

The line su - phablet changes the user to phablet, not super-user. It is generally best practice to use least privilege, so as to be less vulnerable to attack.

[undsoft]

This answer is no longer relevant.

[david6]

Will need to review and try that method first.

[Cos64]

Works great, but the last command will show no IP if the network interface is not named wlan0. Mine was wlan2 for some reason.

[Stunts]

Very informative answer as it does away with the adb shell and USB cable. Two thumbs up!

[TenLeftFingers]

The command: adb push ~/.ssh/id_rsa.pub /home/phablet/.ssh/authorized_keys Gives me: cannot stat '/home/tenleftfingers/.ssh/id_rsa.pub': No such file or directory

[zloster]

Indeed Veryvery usefull answer. +2

[Anish]

@ogra (who knows better than me) tells me that sudo android-gadget-service enable ssh superceded sudo setprop persist.service.ssh true and should be used instead, but I haven't tested this.

[Damien_The_Unbeliever]

Doesn't this ignore the existence of suits? E.g. a hand composed of 4H + 4S + 6D + 8C + 8H. Min = 4, Max = 8, (Min + Max) * 5 / 2 = 30. Sum = 30. But no straight.

[Michel Keijzers]

@Damien_The_Unbeliever You are fully right; I changed the algorithm.

[Damien_The_Unbeliever]

I think you need to &= or insert some early breaks in those loops. Same hand again ends up assigning isStraight the values true, false, true, false, true and then returns true.

[Michel Keijzers]

@Damien_The_Unbeliever True .. and fixed (hard to do without a compiler nearby and test case.

[Peterino]

No need for Developer Mode or making the image writable. See SSH Ubuntu Touch for an easy, working solution. As always with password-less authentication you need to place a /home/phablet/.ssh/authorized_keys file (with a public key of the PC you're using to access the Ubuntu Touch device) on your device. Running ssh -v phablet@<ip-address> (verbose) helps to debug login or permission issues.

[Khurshid Alam]

@orga Does it broadcast with zeroconf (avahi-daemon)? That way I can see my device on nautilus and transfer files over sftp.

[Mantas Vaitkūnas]

I also had to add permissions: chmod o-w ~/

[Alan Mimms]

For me, the phablet was only answering on IPv6. So I had to use ssh -6 phablet@ipv6-addr%ethernet-interface to get it to work.