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iSH

My notes about iSH.app and SSH configuration on iPad and Mac

SSH Configuration

Note: Mac Prompt: mac: iPad prompt: ipad:

Intro, Basics from MAN Pages

~/.ssh/
    default location for all user-specific
    configuration and authentication information.
    permissions are r/w/x for user, none for otheres
drwx------    5 root     root         160 Dec  9 13:07 .ssh/
~/.ssh/id_rsa
    Contains the private key for authentication.
    Should be readable by the user but not
    accessible by others.
    !!! ssh will IGNORE a private key file if 
    it is accessible by others.
-rw-------    1 root     root        2.5K Dec  9 13:07 id_rsa
-rw-r--r--    1 root     root         570 Dec  9 13:07 id_rsa.pub
-rw-r--r--    1 root     root         533 Dec  9 18:21 known_hosts
~/.ssh/id_rsa.pub
    Contains the public key for authentication.
    These files are not sensitive and can (but need not) be
    readable by anyone.

~/.ssh/known_hosts
  Contains a list of host keys for all hosts the user has logged
  into that are not already in the systemwide list of known host
  keys. See sshd(8) for further details of the format of this file.

ipad: cat ~/.ssh known_hosts

# truncuted for redability.
192.168.0.94 ecdsa-sha2-nistp256 AAAAE2VijZHNhLX...T+0=
github.com,140.82.121.3 ecdsa-sha2-nistp256 AAAAE2V0U2...wockg=
140.82.121.4 ecdsa-sha2-nistp256 AAAAE2VjTY.../++Tpockg=

Run an SSH Server on iOS

ipad:

apk add openssh    # install ssh and ssh server.
ssh-keygen -A      # create host keys (no questions asks!)
passwd             # set a password for root to protect your iOS device
echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config  # modified config for root login. 
/usr/sbin/sshd     # start ssh daemon

You should now be able to ssh to your device with username root and the password you typed.

First Time ssh from Mac to iPad:

mac: ssh root@192.168.0.24

ssh: connect to host 192.168.0.24 port 22: Connection refused

If connection refused, go back to iPad and restart ssh

ipad: /usr/sbin/sshd # start ssh server

NOTE: one can only ssh to iPad when /usr/sbin/sshd is ON on iPad.

Next try (ssh from Mac to iPad):

mac: ssh root@192.168.0.24

The authenticity of host '192.168.0.24 (192.168.0.24)' can't be established.
ECDSA key fingerprint is SHA256:JVK7lKOF+6xoDoYGWC0L/ZG8CxY9DfUPN4An6/vqZ5s.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.0.24' (ECDSA) to the list of known hosts.
root@192.168.0.24's password:  # type root password
Welcome to Alpine!

NOTE: iPad can close connection at any time. Hack to keep iPad session alife: ipad: cat /dev/location > /dev/null &

SSH from the same device (not tested yet)

If you are trying to connect via ssh from the same device, make sure you set the port configuration of sshd to use a non standard one (greater than 1024, eg: 22000). You can do this by editing /etc/ssh/sshd_config and set Port 22000 (Replace 22000 with any non-standard port). After this, you can ssh (from iSH itself) using ssh root@localhost -p 22000

PasswordLess login from iPad to Mac

ipad: cd /root/.ssh

ipad: ssh-keygen -C 'ipad-2-mac'

Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): /root/.ssh/id_rsa_ipad-2-mac
Enter passphrase (empty for no passphrase): # press Enter
Enter same passphrase again: # press Enter
Your identification has been saved in /root/.ssh/id_rsa_ipad-2-mac
Your public key has been saved in /root/.ssh/id_rsa_ipad-2-mac.pub
The key fingerprint is:
SHA256:7zjL/+39j28PSYj4s156+VK4tkoL6djOfJ8EXvmSo6E ipad-2-mac
The key's randomart image is:
+---[RSA 3072]----+
|                 |
|                 |
|                 |
|         . . o   |
|        S o +..  |
|         = o.+.. |
|        o B *++  |
|       B.*.X*= +.|
|      ..E*X*===oX|
+----[SHA256]-----+

Copy public key from iPad to Mac

NOTE: To copy anything or to login from client to server you MUST enable Remote Login on Mac.

ON MAC

To enable remote login for members of the admin group enter:

mac: sudo systemsetup -setremotelogin on

or do it from a GUI.

check if it is turned on:

mac: sudo systemsetup -getremotelogin

Remote Login: On

Alternative Way of Starting and Stoping ssh on Mac

start ssh

mac: sudo launchctl load -w /System/Library/LaunchDaemons/ssh.plist

stop ssh

mac: sudo launchctl unload /System/Library/LaunchDaemons/ssh.plist

Try to copy public key from iPad to Mac

ipad: scp ~/.ssh/id_rsa_ipad-2-mac.pub januszoles@192.168.0.94:/Users/januszoles/.ssh/id_rsa_ipad-2-mac.pub

Password:
id_rsa_ipad-2-mac.pub                                                        100%  557    17.6KB/s   00:00

Login from iPad to Mac

ipad: ssh januszoles@192.168.0.94

Password:
Last login: Thu Dec 16 09:10:30 2021

After succesfull login to Mac

 ➜ ls -Al ~/.ssh
-rw-r--r--    1 januszoles  staff   557 Dec 16 09:14 id_rsa_ipad-2-mac.pub
-rw-r--r--    1 januszoles  staff  1692 Dec 16 00:03 known_hosts

Append iPad public key to authorized_keys file

NOTE: if authorized_keys file NOT exist this command will create it.

cat ~/.ssh/id_rsa_ipad-2-mac.pub >> ~/.ssh/authorized_keys

mac: ls -Al ~/.ssh

-rw-r--r--    1 januszoles  staff   557 Dec 16 09:19 authorized_keys
-rw-r--r--    1 januszoles  staff   557 Dec 16 09:14 id_rsa_ipad-2-mac.pub
-rw-r--r--    1 januszoles  staff  1692 Dec 16 00:03 known_hosts

mac: cat ~/.ssh/authorized_keys # check file

ssh-rsa A####...####= ipad-2-mac

mac: exit

Connection to 192.168.0.94 closed.

On iPad

Adds Private Key to the Authentication Agent

NOTE:
ssh-add -- adds private key identities to the authentication agent

-L    Lists public key parameters of all identities currently  
      represented by the agent.

ipad: ssh-add -L

Could not open a connection to your authentication agent.

Starts ssh-agent for shell use.

ipad:

eval `ssh-agent -s`
Agent pid 54

ipad: ssh-add -L

The agent has no identities.

Add private keys to ssh-agent

ipad: ssh-add /root/.ssh/id_rsa_ipad-2-mac

Identity added: /root/.ssh/id_rsa_ipad-2-mac (ipad-2-mac)

ipad: ssh-add -L

ssh-rsa A#####...####= ipad-2-mac

Now I can login to Mac without password.

Create host config file to simplify login

NOTE: ~/.ssh/config DOES NOT exist by default.

ipad:

cat << EOF > /root/.ssh/config
Host mac
    Hostname 192.168.0.94
    Port 22
    User januszoles
EOF

Now I can login to my mac by typing:

ipad: ssh mac

Next, create config on my mac so I could ssh to my ipad by typing: ssh ipad

ON mac: Create public/private keys for mac-2-ipad connection

mac: cd ~/.ssh/

mac: ssh-keygen -C 'mac-2-ipad'

  Generating public/private rsa key pair.
  Enter file in which to save the key (/Users/januszoles/.ssh/id_rsa): id_rsa_mac-2-ipad
  Enter passphrase (empty for no passphrase): 
  Enter same passphrase again: 
  Your identification has been saved in id_rsa_mac-2-ipad.
  Your public key has been saved in id_rsa_mac-2-ipad.pub.
  The key fingerprint is:
  SHA256:7gknTQ00NDr7xXnA8vAD3Zcu5yw4Ek47QMYuFk2qpyo mac-2-ipad
  The key's randomart image is:
  +---[RSA 3072]----+
  |      ..=        |
  |     = o = .   . |
  |    o B = + . o  |
  |   . = o X o o   |
  |  . + + S O o o  |
  |   + . O + + =   |
  |  .   o X o . o  |
  |E.     = + . .   |
  |o       o        |
  +----[SHA256]-----+

mac: ls -Al ~/.ssh

   -rw-r--r--  1 januszoles  staff   557B Dec 16 09:19 authorized_keys
   -rw-r--r--  1 januszoles  staff   271B Dec 19 01:21 config
   -rw-------  1 januszoles  staff   2.5K Dec 20 23:19 id_rsa_mac-2-ipad
   -rw-r--r--  1 januszoles  staff   564B Dec 20 23:19 id_rsa_mac-2-ipad.pub
   -rw-r--r--  1 januszoles  staff   1.7K Dec 16 00:03 known_hosts

Edit mac:~/.ssh/config file

mac: vim ~/.ssh/confg

add this to config:

Host ipad
    Hostname 192.168.0.24
    Port 22
    IdentityFile ~/.ssh/id_rsa_mac-2-ipad
    User root

Copy public key to ipad

mac: cd ~/.ssh/

mac: scp ./id_rsa_mac-2-ipad.pub ipad:/root/.ssh/id_rsa_mac-2-ipad.pub

    root@192.168.0.24's password:
    id_rsa_mac-2-ipad.pub                        100%  564    35.7KB/s   00:00

ON IPAD

Copy mac public key to authorized_key file

ipad:

cat ~/.ssh id_rsa_mac-2-ipad.pub >> authorized_keys

ipad:/root/.ssh/config file

# IdentityFile points to location where the privet key for mac login is.
Host mac
    Hostname 192.168.0.94
    Port 22
    IdentityFile ~/.ssh/id_rsa_ipad-2-mac
    User januszoles

ipad:~/.ssh# ls -Al

-rw-r--r--    1 root     root           564 Dec 20 22:40 authorized_keys
-rw-r--r--    1 root     root           102 Dec 18 09:05 config
-rw-------    1 root     root          2590 Dec 16 07:57 id_rsa_ipad-2-mac
-rw-r--r--    1 root     root           564 Dec 20 22:34 id_rsa_mac-2-ipad.pub
-rw-r--r--    1 root     root           557 Dec 16 07:57 id_rsa_ipad-2-mac.pub
-rw-r--r--    1 root     root           533 Dec  9 18:21 known_hosts

Add SSHD to OpenRC so it starts when you open the iSH.app

  1. What is OpenRC?

ipad: apk info openrc

openrc-0.43.3-r2 description:
OpenRC manages the services, startup and shutdown of a host

openrc-0.43.3-r2 webpage:
https://github.com/OpenRC/openrc

openrc-0.43.3-r2 installed size:
2528 KiB
  1. Try if rc-update is installed.

ipad: rc-update

-ash: rc-update: not found
  1. Install

ipad: apk add openrc

  1. Edit /etc/inittab

ipad: vi /etc/inittab

find:

# /etc/inittab

::sysinit:/sbin/openrc sysinit

change to:

# /etc/inittab

::sysinit:/sbin/openrc
# /etc/inittab

::sysinit:/sbin/openrc
::sysinit:/sbin/openrc boot
::wait:/sbin/openrc default
tty1::respawn:/sbin/getty 38400 tty1
::ctrlaltdel:/sbin/reboot
::shutdown:/sbin/openrc shutdown
  1. Restart iSH

ipad: exit

  1. Check status

ipad: rc-status

Runlevel: sysinit. 
Dynamic Runlevel: hotplugged
Dynamic Runlevel: needed/wanted
Dynamic Runlevel: manual
  1. Add sshd to sysinit

ipad: rc-update add sshd

	* service sshd added to runlevel sysinit
  1. Check

ipad: rc-status

Runlevel: sysinit
sshd                                     [  stopped  ]
Dynamic Runlevel: hotplugged
Dynamic Runlevel: needed/wanted
Dynamic Runlevel: manual

  1. Exit. Close the app and start iSH again

  2. Check if sshd started

ipad: rc-service sshd status

* status: started

CONFIGURE GITHUB ON IPAD iSH

1. Install git

Get info

ipad: apk info git

git-2.32.0-r0 description:
Distributed version control system

git-2.32.0-r0 webpage:
https://www.git-scm.com/

git-2.32.0-r0 installed size:
12 MiB

Install

ipad: apk add git

2. Configure git

Setup user info used across all local repos:

ipad: git config --global user.name "januszoles"

Set an email address:

ipad: git config --global user.email "<my-email@example.com>"

Set coloring options for ease of use:

ipad: git config --global color.ui auto

Clone repo located at https://gerrit.wikimedia.org onto iPad:

ipad: git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/examples.git

Sample session:

ipad: cd

ipad: git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/examples.git

Cloning into 'git'...
remote: Total 1633 (delta 0), reused 1633 (delta 0)
Receiving objects: 100% (1633/1633), 781.81 KiB | 130.00 KiB/s, done.
Resolving deltas: 100% (1094/1094), done.

Check repo

ipad: cd git

ipad: ls

CODE_OF_CONDUCT.md      Gruntfile.js            i18n                    package.json
COPYING                 README.md               includes                sql
Example.i18n.alias.php  composer.json           modules                 tests
Example.i18n.magic.php  extension.json          package-lock.json

Remove cloned repo:

ipad: cd

ipad: rm -rf ./git

Print git config:

ipad: git config -l

user.email=my-email@example.com
user.name=januszoles
init.defaultbranch=main
color.ui=auto
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true

Create ssh keys for Github

create new private/public key pair to comunicat with github

ipad:

ssh-keygen -t ed25519 -C "my-email@example.com" -f ~/.ssh/ed25519_ipad-github

cat and copy public key to clipboard

NOTE: no pbcopy on Alpine Linux iSH, use mouse or finger :)

ipad: cat ~/.ssh/ed25519_ipad-github.pub

Go to page https://github.com/settings/ssh/new and paste your ssh public key.

ipad: Append new host info to config file (to simplify login)

NOTE: ~/.ssh/config DOES NOT exist by default.
NOTE: ~/.ssh/config MUST be: -rw------- (chmod 600)

Check permission MUST be: -rw-------

ipad: ls -Al ~/.ssh/config

-rw-------    1 root     root           377 Mar 27 22:18 /root/.ssh/config

if different:

ipad: chmod 600 ~/.ssh/config

Append GitHub info to the end of config file:

ipad:

cat << EOF >> /root/.ssh/config
Host github.com
    IdentityFile ~/.ssh/ed25519_ipad-github
    User januszoles
EOF

Take a look:

ipad: cat ~/.ssh/config

Try to clone repo from github to your ipad using SSH:

ipad: git clone git@github.com:<username>/<repository>.git

Welcome to Alpine on iPhone 6! (2023-04-12)

History of Installation and Configuration of iSH Alpine Linux on my old iPhone 6 running iOS 12.5.7.

No external keyboard was available. The Apple external Bluetooth keyboard A1314 was not listed as a device on my iPhone 6.

The idea was to install and configure SSH and some other tools, so that I could log in to my iPhone from my iPad via SSH and have the possibility to use an external keyboard or from my Mac. This was just to learn a little bit more about SSH and Git.

Here are the step-by-step instructions, including the wrong steps that were taken.

Welcome to Alpine!

You can install packages with: apk add <package>

You may change this message by editing /etc/motd.

iPhone6:~#

What do I have here?

iPhone6:~# apk info
WARNING: Ignoring https://dl-cdn.alpinelinux.org/alpine/v3.14/main: No such file or directory
WARNING: Ignoring https://dl-cdn.alpinelinux.org/alpine/v3.14/community: No such file or directory
musl
busybox
alpine-baselayout
alpine-keys
libcrypto1.1
libssl1.1
ca-certificates-bundle
libretls
ssl_client
zlib
apk-tools
scanelf
musl-utils
libc-utils

First things first!

iPhone6:~# apk update
fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/main/x86/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/community/x86/APKINDEX.tar.gz
v3.14.10-12-gbc9180e8f5c [https://dl-cdn.alpinelinux.org/alpine/v3.14/main]
v3.14.10-11-gbe90e547195 [https://dl-cdn.alpinelinux.org/alpine/v3.14/community]
OK: 14630 distinct packages available

iPhone6:~# apk upgrade
(1/9) Upgrading musl (1.2.2-r3 -> 1.2.2-r4)
(2/9) Upgrading busybox (1.33.1-r6 -> 1.33.1-r8)
Executing busybox-1.33.1-r8.post-upgrade
(3/9) Upgrading libcrypto1.1 (1.1.1l-r0 -> 1.1.1t-r2)
(4/9) Upgrading libssl1.1 (1.1.1l-r0 -> 1.1.1t-r2)
(5/9) Upgrading ca-certificates-bundle (20191127-r5 -> 20220614-r0)
(6/9) Upgrading libretls (3.3.3p1-r2 -> 3.3.3p1-r3)
(7/9) Upgrading ssl_client (1.33.1-r6 -> 1.33.1-r8)
(8/9) Upgrading zlib (1.2.11-r3 -> 1.2.12-r3)
(9/9) Upgrading musl-utils (1.2.2-r3 -> 1.2.2-r4)
Executing busybox-1.33.1-r8.trigger
Executing ca-certificates-20220614-r0.trigger
OK: 41 MiB in 34 packages

Trying to add man pages by try and error

iPhone6:~# apk add man
fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/main/x86/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/community/x86/APKINDEX.tar.gz
ERROR: unable to select packages:
  man (no such package):
    required by: world[man]

iPhone6:~# apk add man-pages
(1/1) Installing man-pages (5.11-r0)
OK: 22 MiB in 15 packages

iPhone6:~# apk add mandoc
(1/1) Installing mandoc (1.14.5-r5)
Executing busybox-1.33.1-r6.trigger
OK: 22 MiB in 16 packages
iPhone6:~# mam man
-ash: mam: not found

iPhone6:~# apk add mandoc-apropos less less-doc
(1/5) Installing ncurses-terminfo-base (6.2_p20210612-r1)
(2/5) Installing ncurses-libs (6.2_p20210612-r1)
(3/5) Installing less (581-r2)
(4/5) Installing less-doc (581-r2)
(5/5) Installing mandoc-apropos (1.14.5-r5)
Executing busybox-1.33.1-r6.trigger
Executing mandoc-apropos-1.14.5-r5.trigger
OK: 23 MiB in 21 packages

Finally

iPhone6:~# man ls

Add rsync just in case

iPhone6:~# apk add rsync rsync-doc
(1/5) Installing libacl (2.2.53-r0)
(2/5) Installing popt (1.18-r0)
(3/5) Installing zstd-libs (1.4.9-r1)
(4/5) Installing rsync (3.2.5-r0)
(5/5) Installing rsync-doc (3.2.5-r0)
Executing busybox-1.33.1-r6.trigger
Executing mandoc-apropos-1.14.5-r5.trigger
OK: 24 MiB in 26 packages

Add git

iPhone6:~# apk info git
git-2.32.6-r0 description:
Distributed version control system

git-2.32.6-r0 webpage:
https://www.git-scm.com/

git-2.32.6-r0 installed size:
12 MiB

How to search just for an app name

iPhone6:~# apk -e search git
git-2.32.6-r0

iPhone6:~# apk add git
(1/7) Installing ca-certificates (20220614-r0)
(2/7) Installing brotli-libs (1.0.9-r5)
(3/7) Installing nghttp2-libs (1.43.0-r0)
(4/7) Installing libcurl (7.79.1-r5)
(5/7) Installing expat (2.5.0-r0)
(6/7) Installing pcre2 (10.36-r1)
(7/7) Installing git (2.32.6-r0)
100% ███████████████████████████████████████████Executing ca-certificates-20220614-r0.trigger
OK: 40 MiB in 33 packages

iPhone6:~# man git
man: No entry for git in the manual.

iPhone6:~# apk search git | grep doc
lazygit-doc-0.28.2-r2
git-interactive-rebase-tool-doc-2.1.0-r0
cgit-doc-1.2.3-r0
git-flow-doc-1.12.3-r0
git-crypt-doc-0.6.0-r1
gitg-doc-3.32.1-r6
git-review-doc-1.28.0-r5
git-doc-2.32.6-r0          # <——————— that’s the one
git-lfs-doc-2.13.1-r1
github-cli-doc-2.1.0-r1
stagit-doc-0.9.6-r0
git-subtree-doc-2.32.6-r0

iPhone6:~# apk add git-doc
(1/1) Installing git-doc (2.32.6-r0)
Executing mandoc-apropos-1.14.5-r5.trigger
OK: 41 MiB in 34 packages

iPhone6:~# man git

GIT(1)             Git Manual             GIT(1)

NAME
   git - the stupid content tracker

SYNOPSIS
   git [--version] [--help] [-C <path>] [-c <name>=<value>]
       [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
       [-p|--paginate|-P|--no-pager] [--no-replace-objects] [--bare]
       [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
       [--super-prefix=<path>] [--config-env=<name>=<envvar>]
       <command> [<args>]

iPhone:~# git --help
usage: git [--version] [--help] [-C <path>] [-c <name>=<value>]
           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
           [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--bare]
           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
           [--super-prefix=<path>] [--config-env=<name>=<envvar>]
           <command> [<args>]

These are common Git commands used in various situations:

start a working area (see also: git help tutorial)
   clone             Clone a repository into a new directory
   init              Create an empty Git repository or reinitialize an existing one

work on the current change (see also: git help everyday)
   add               Add file contents to the index
   mv                Move or rename a file, a directory, or a symlink
   restore           Restore working tree files
   rm                Remove files from the working tree and from the index
   sparse-checkout   Initialize and modify the sparse-checkout 

examine the history and state (see also: git help revisions)
   bisect            Use binary search to find the commit that introduced a bug
   diff              Show changes between commits, commit and working tree, etc
   grep              Print lines matching a pattern
   log               Show commit logs
   show              Show various types of objects
   status            Show the working tree status

grow, mark and tweak your common history
   branch            List, create, or delete branches
   commit            Record changes to the repository
   merge             Join two or more development histories together
   rebase            Reapply commits on top of another base tip
   reset             Reset current HEAD to the specified state
   switch            Switch branches
   tag               Create, list, delete or verify a tag object signed with GPG

collaborate (see also: git help workflows)
   fetch             Download objects and refs from another repository
   pull              Fetch from and integrate with another repository or a local branch
   push              Update remote refs along with associated objects

'git help -a' and 'git help -g' list available subcommands and some
concept guides. See 'git help <command>' or 'git help <concept>'
to read about a specific subcommand or concept.
See 'git help git' for an overview of the system.

Just checking, is it possible to install neovim on old iPhone6

iPhone6:~# apk search -e neovim
neovim-0.4.4-r1

Yes, it is.

iPhone6:~# apk add neovim
(1/10) Installing libintl (0.21-r0)
(2/10) Installing libgcc (10.3.1_git20210424-r2)
(3/10) Installing luajit (2.1_p20210510-r0)
(4/10) Installing libuv (1.41.0-r0)
(5/10) Installing libluv (1.36.0.0-r3)
(6/10) Installing msgpack-c (3.3.0-r0)
(7/10) Installing unibilium (2.1.0-r0)
(8/10) Installing libtermkey (0.22-r0)
(9/10) Installing libvterm (0.1.20190920-r1)
(10/10) Installing neovim (0.4.4-r1)
Executing busybox-1.33.1-r8.trigger
OK: 59 MiB in 44 packages

Install and config ssh

iPhone6:~# apk add openssh
(1/8) Installing openssh-keygen (8.6_p1-r3)
(2/8) Installing libedit (20210216.3.1-r0)
(3/8) Installing openssh-client-common (8.6_p1-r3)
(4/8) Installing openssh-client-default (8.6_p1-r3)
(5/8) Installing openssh-sftp-server (8.6_p1-r3)
(6/8) Installing openssh-server-common (8.6_p1-r3)
(7/8) Installing openssh-server (8.6_p1-r3)
(8/8) Installing openssh (8.6_p1-r3)
Executing busybox-1.33.1-r8.trigger
OK: 65 MiB in 52 packages

iPhone6:~# rc-update add sshd
-ash: rc-update: not found

iPhone6:~# apk add openrc
(1/3) Installing ifupdown-ng (0.11.3-r0)
(2/3) Installing openrc (0.43.3-r3)
Executing openrc-0.43.3-r3.post-install
(3/3) Installing rsync-openrc (3.2.5-r0)
100% ███████████████████████████████████████████OK: 68 MiB in 55 packages
K: 68 MiB in 55 packages

iPhone6:~# rc-update add sshd
 * service sshd added to runlevel sysinit

iPhone6:~# service sshd start
 * WARNING: sshd is already starting

iPhone6:~# passwd
Changing password for root
New password: 
Retype password: 
passwd: password for root changed by root

iPhone6:~# echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config

iPhone6:~# tail -2 /etc/ssh/sshd_config
#       ForceCommand cvs server
PermitRootLogin yes

iPhone6:~# rc-status
 * Caching service dependencies ...
Service `hwdrivers' needs non existent service `dev'
Service `machine-id' needs non existent service `dev'                                       [ ok ]
Runlevel: sysinit
 sshd                               [  stopped  ]
Dynamic Runlevel: hotplugged
Dynamic Runlevel: needed/wanted
Dynamic Runlevel: manual
iPhone6:~# service sshd start
grep: /proc/filesystems: No such file or directory
 * You are attempting to run an openrc service on a
 *  * another initialization system to boot this system.
 * If you really want to do this, issue the following command:
 * ERROR: sshd failed to start
iPhone6:~# 

iPhone6:~# /usr/sbin/sshd
sshd: no hostkeys available -- exiting.

iPhone6:~# cat /etc/inittab
# /etc/inittab

::sysinit:/sbin/openrc sysinit
::sysinit:/sbin/openrc boot
::wait:/sbin/openrc default

# Set up a couple of getty's
tty1::respawn:/sbin/getty 38400 tty1
tty2::respawn:/sbin/getty 38400 tty2
tty3::respawn:/sbin/getty 38400 tty3
tty4::respawn:/sbin/getty 38400 tty4
tty5::respawn:/sbin/getty 38400 tty5
tty6::respawn:/sbin/getty 38400 tty6

# Put a getty on the serial port
#ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100

# Stuff to do for the 3-finger salute
::ctrlaltdel:/sbin/reboot

# Stuff to do before rebooting
::shutdown:/sbin/openrc shutdown

This is a tricky one, without an external keyboard

iPhone6:~# vi /etc/inittab

vi step by step on iPhone6 without external keyboard

# vi /etc/inittab

# navigation help
h - left
j - down
k - up
l - right

# (navigate) down, right, right, right...
jllll      

#                     place cursor here  
#                     | 
::sysinit:/sbin/openrc sysinit

# (d shift4) delete from curosr to the end of the line
d$
::sysinit:/sbin/openrc

# write (save) and quit vi
:wq

# otherwise quit without saving
:q!

iPhone6:~# cat /etc/inittab
# /etc/inittab

::sysinit:/sbin/openrc
::sysinit:/sbin/openrc boot
::wait:/sbin/openrc default

iPhone6:~# rc-status
Runlevel: sysinit
 sshd                               [  stopped  ]
Dynamic Runlevel: hotplugged
Dynamic Runlevel: needed/wanted
Dynamic Runlevel: manual

iPhone6:~# rc-update add sshd
 * rc-update: sshd already installed in runlevel `sysinit'; skipping

Close iSH.app completely and open again

iPhone6:~# exit

iPhone6:~# rc-service sshd status
 * status: starting

iPhone6:~# /usr/sbin/sshd
iPhone6:~#

One more try after restart iPhone and iSH

iPhone6:~# rc-status
Runlevel: default
Dynamic Runlevel: hotplugged
Dynamic Runlevel: needed/wanted
Dynamic Runlevel: manual

iPhone6:~# rc-update add sshd
 * service sshd added to runlevel default

iPhone6:~# rc-status
Runlevel: default
 sshd                               [  started  ]
Dynamic Runlevel: hotplugged
Dynamic Runlevel: needed/wanted
Dynamic Runlevel: manual

iPhone6:~# rc-service sshd status
 * status: started

Test from iPad

iPad:~# ssh root@192.168.0.73
ssh: connect to host 192.168.0.73 port 22: Connection refused

iPad:~# ssh root@192.168.0.73
The authenticity of host '192.168.0.73 (192.168.0.73)' can't be established.
RSA key fingerprint is SHA256:Ktrk/h6j9Ti22oCo4VkyI5WWWpCQPPwlD7i9wymA2NQ.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.0.73' (RSA) to the list of known hosts.

root@192.168.0.73's password: 
Welcome to Alpine!

iPhone6:~#

Copy ssh public key from iPad --> iPhone6

It looks like it tries to install the last used or the newest one. Never mind. (crl+C) to exit.

iPad:~# ssh-copy-id root@192.168.0.73
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa_ipad-2-j17.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
expr: warning: '^ERROR: ': using '^' as the first character
of a basic regular expression is not portable; it is ignored
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.0.73's password:
^c

Generate new key

iPad:~/.ssh# ssh-keygen -C 'ipad' -f ~/.ssh/id_rsa_ipad
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa_ipad
Your public key has been saved in /root/.ssh/id_rsa_ipad.pub
The key fingerprint is:
SHA256:7E+hwO8uKa7E28XIfjW2ojkukGKipMB/xrh0eXpd+Wk ipad
The key's randomart image is:
+---[RSA 3072]----+
|                 |
|                 |
|                 |
|     . .         |
|..    o S . .    |
|*= . o.++. +     |
|O.+.=oo==oo . .  |
|o.o*+*Bo.+   E   |
|  o*@*.+o . .    |
+----[SHA256]-----+

Copy public key from iPad ---> iPhone6 It will be automatically added to ~/.ssh/authorize_keys on iPhone and all files will be created on the fly. This method is way fastere then doing it by scpand copy and paste to authorized key.

iPad:~/.ssh# ssh-copy-id -i ~/.ssh/id_rsa_ipad.pub root@192.168.0.73
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa_ipad.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
expr: warning: '^ERROR: ': using '^' as the first character
of a basic regular expression is not portable; it is ignored
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.0.73's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'root@192.168.0.73'"
and check to make sure that only the key(s) you wanted were added.

iPhone6:~# exit
Connection to 192.168.0.73 closed.

iPad:~/.ssh# ssh-add -L
Could not open a connection to your authentication agent.
iPad:~/.ssh# 

iPad:~/.ssh# eval `ssh-agent -s`
Agent pid 131

iPad:~/.ssh# ssh-add ~/.ssh/id_rsa_ipad
Identity added: /root/.ssh/id_rsa_ipad (ipad)

iPad:~/.ssh# ssh root@192.168.0.73
Welcome to Alpine!
...
iPhone6:~# exit
Connection to 192.168.0.73 closed.

iPad:~/.ssh#

Config GitHub on iPhone6

New default key

iPhone6:~# ssh-keygen -t ed25519 -C "MY@EMAIL.COM"

Start the ssh-agent

iPhone6:~# eval "$(ssh-agent -s)"

Edit config

iPhone6:~# vi ~/.ssh/config

Config:

iPhone6:~# cat ~/.ssh/config
#---------------------------------
Host github.com
  AddKeysToAgent yes
  IdentityFile ~/.ssh/id_ed25519
#---------------------------------

List files

iPhone6:~# ls -1 ~/.ssh
> authorized_keys
> config
> id_ed25519
> id_ed25519.pub
> known_hosts

Add your SSH private key to the ssh-agent.

iPhone6:~# ssh-add ~/.ssh/id_ed25519

cat, copy and paste to https://github.com/settings/ssh/new Login first!

iPhone6:~# cat ~/.ssh/id_ed25519.pub

Test an SSH connection

iPhone6:~# ssh -T git@github.com
> Hi januszoles! You've successfully authenticated, but GitHub does not provide
> shell access.

Displays the fingerprints of all the keys that have been added to the SSH agent

iPhone6:~# ssh-add -l -E sha256

Verbose Test

iPhone6:~# ssh -vT git@github.com

Clone repo

iPhone6:~# git clone git@github.com:januszoles/ish.git
> Cloning into 'ish'...
...

Edit

iPhone6:~# vi  /etc/hosts

iPhone6:~# cat /etc/hosts

127.0.0.1       localhost localhost.localdomain
::1             localhost localhost.localdomain
192.168.0.24    ipad
192.168.0.73    j6

Apple Bluetooth Keyboard A1314 Setup on iPhone6

  1. Go to: Settings > Bluetooth,

  2. Turn OFF Bluetooth,

  3. Turn ON Bluetooth,

Keyboard:

  1. Check if it is on: Press it once (if light turns green is set to ON),

  2. Turn keyboard OFF: Press and hold on/off button,

  3. Turn keyboard ON and pair it with iPhone: Press and hold on/off button until the green light start blinking, that means it’s ready to pair with new device,

  4. On iPhone6 press keyboardName (if there is one)

NOTE: After few tries it should find, and recognize a keyboard, When connected it shows pairing passcode on the screen

  1. iPhone6 will display 4 digit passcode

  2. Type the passcode on keyboard, (you need to do it just once)

Config ssh j13 <-> j6 (2023-05-06)

Note:
Mac prompt: j13:
iPhone6 prompt: j6:

Configure ssh j13 -> j6

j13:~$ ssh-keygen -t ed25519 -C 'j13-j6' -f ~/.ssh/ed25519_j13-j6
j13:~$ ssh-copy-id -i ~/.ssh/ed25519_j13-j6.pub root@192.168.0.6

j13:~$ cat ~/.ssh/config

Host j6
    Hostname 192.168.0.6
    Port 22
    IdentityFile ~/.ssh/ed25519_j13-j6
    User root

j13:~/$ ssh j6
Welcome to Alpine on iPhone 6!

Configure ssh j6 -> j13

j6:~# ssh-keygen -t ed25519 -C 'j6-j13' -f ~/.ssh/ed25519_j6-j13
Generating public/private ed25519 key pair.

j6:~# ssh-copy-id -i ~/.ssh/ed25519_j6-j13 januszoles@192.168.0.13

j6:~# cat ~/.ssh/config

Host j13
    Hostname 192.168.0.13
    Port 22
    IdentityFile ~/.ssh/ed25519_j6-j13
    User januszoles

j6:~# ssh j13
Last login: Sat May  6 12:09:25 2023 from 192.168.0.6

Fixing WARNING: Ignoring http://apk.ish.app/v3.14-2023-05-08/main: No such file or directory (2023-05-13)

j6:~# apk info starship
WARNING: Ignoring http://apk.ish.app/v3.14-2023-05-08/main: No such file or directory
WARNING: Ignoring http://apk.ish.app/v3.14-2023-04-28/community: No such file or directory

j6:~# cat /etc/apk/repositories 
# This file contains pinned repositories managed by iSH. If the /ish directory
# exists, iSH uses the metadata stored in it to keep this file up to date (by
# overwriting the contents on boot.)
http://apk.ish.app/v3.14-2023-05-08/main
http://apk.ish.app/v3.14-2023-04-28/community
j6:~# echo https://dl-cdn.alpinelinux.org/alpine/v3.14/main >> /etc/apk/repositories

j6:~# echo https://dl-cdn.alpinelinux.org/alpine/v3.14/community >> /etc/apk/repositories
j6:~# cat /etc/apk/repositories 
# This file contains pinned repositories managed by iSH. If the /ish directory
# exists, iSH uses the metadata stored in it to keep this file up to date (by
# overwriting the contents on boot.)
http://apk.ish.app/v3.14-2023-05-08/main
http://apk.ish.app/v3.14-2023-04-28/community
https://dl-cdn.alpinelinux.org/alpine/v3.14/main
https://dl-cdn.alpinelinux.org/alpine/v3.14/community

Insert hash # in front of each line starting with http://apk.ish.app

j6:~/ish# sed -i -e 's/^\(http:\/\/apk.ish.app\)/# \1/' /etc/apk/repositories

Check

j6:~/ish# cat /etc/apk/repositories
# This file contains pinned repositories managed by iSH. If the /ish directory
# exists, iSH uses the metadata stored in it to keep this file up to date (by
# overwriting the contents on boot.)
# http://apk.ish.app/v3.14-2023-05-08/main
# http://apk.ish.app/v3.14-2023-04-28/community
https://dl-cdn.alpinelinux.org/alpine/v3.14/main
https://dl-cdn.alpinelinux.org/alpine/v3.14/community

Back in business

j6:~/ish# apk info starship
starship-0.54.0-r0 description:
The minimal, blazing-fast, and infinitely customizable prompt for any shell!

starship-0.54.0-r0 webpage:
https://starship.rs

starship-0.54.0-r0 installed size:
2436 KiB

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iPad iSH Alpine Linux Notes

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