Merge branch 'galenwp-read'

Readme edits from Galen
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Raymond Pasco 2016-05-27 15:29:19 -04:00
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@ -16,72 +16,21 @@ which the Internet can't easily address. Programming for a
deterministic single-level store is also a different experience from deterministic single-level store is also a different experience from
Unix programming, regardless of language. Unix programming, regardless of language.
Getting involved
----------------
If you're interested in following Urbit, you can:
- Read our documentation at [urbit.org](http://urbit.org/docs)
- Subscribe to our newsletter at [urbit.org](http://urbit.org).
- Check out the
[urbit-dev](https://groups.google.com/forum/#!forum/urbit-dev)
mailing list.
- Follow [@urbit_](https://twitter.com/urbit\_) on Twitter.
- Email us: [`urbit@urbit.org`](mailto:urbit@urbit.org). We're happy to answer questions and chat.
Code of conduct
---------------
Everyone involved in the Urbit project needs to understand and
respect our code of conduct, which is: "don't be rude."
Install Install
======= =======
Urbit can be installed on most Unix systems. There is no Windows Urbit is designed to run on any Unix box with an internet connection. Debian
port. Windows is a wonderful OS, we just haven't gotten to it yet. (jessie), OS X, FreeBSD and Fedora all work well.
Use a VM.
Configure swap if needed Urbit is alpha software. Its not yet completely stable, its crypto hasnt
------------------------ been audited, and there are plenty of rough edges. Urbit is lots of fun to play
with, but not quite ready for your important or sensitive data.
Urbit wants to map 2GB of memory when it boots up. We won't ## Build from source
necessarily use all this memory, we just want to see it. On a
normal modern PC or Mac, this is not an issue. On some small
cloud virtual machines (Amazon or Digital Ocean), the default
memory configuration is smaller than this, and you need to
manually configure a swapfile.
To add swap to a DO droplet, [read this](https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04). To add swap on an Amazon instance, [read this](http://stackoverflow.com/questions/17173972/how-do-you-add-swap-to-an-ec2-instance)
Don't spend a lot of time tweaking these settings; the simplest
thing is fine.
Install as a package
--------------------
<!--
waiting on makefile changes.
### OS X - Homebrew
brew install --HEAD homebrew/head-only/urbit
-->
### Ubuntu or Debian
Third-party packages are available, at:
https://github.com/yebyen/urbit-deb
Urbit is only supported on Jessie onward (but outbound HTTPS requests only work on Stretch; I wish we knew why; help us!)
Hand-build from source
----------------------
First, install all external dependencies. Then, make.
### Dependencies ### Dependencies
urbit depends on: Urbit depends on:
gcc (or clang) gcc (or clang)
gmp gmp
@ -96,135 +45,151 @@ urbit depends on:
libssl-dev (Linux only) libssl-dev (Linux only)
ncurses (Linux only) ncurses (Linux only)
#### Ubuntu or Debian Which can usually be installed with the following one-liners:
sudo apt-get install libgmp3-dev libsigsegv-dev openssl libssl-dev libncurses5-dev git make exuberant-ctags automake autoconf libtool g++ ragel cmake re2c
#### Fedora
sudo dnf install gcc gcc-c++ git gmp-devel openssl-devel openssl ncurses-devel libsigsegv-devel ctags automake autoconf libtool ragel cmake re2c
#### AWS
sudo yum --enablerepo epel install gcc gcc-c++ git gmp-devel openssl-devel ncurses-devel libsigsegv-devel ctags automake autoconf libtool cmake re2c
#### OS X - Homebrew
# Mac OS X [Homebrew]
brew install git gmp libsigsegv openssl libtool autoconf automake cmake brew install git gmp libsigsegv openssl libtool autoconf automake cmake
#### OS X - Macports # Mac OS X [Macports]
sudo port install git gmp libsigsegv openssl autoconf automake cmake sudo port install git gmp libsigsegv openssl autoconf automake cmake
Although `automake`/`autoconf`/`libtool` are generally installed by # Ubuntu or Debian
default, some have reported needing to uninstall and reinstall those sudo apt-get install libgmp3-dev libsigsegv-dev openssl libssl-dev libncurses5-dev git make exuberant-ctags automake autoconf libtool g++ ragel cmake re2c
three packages, at least with Homebrew. Your mileage may vary.
#### FreeBSD # Fedora
sudo dnf install gcc gcc-c++ git gmp-devel openssl-devel openssl ncurses-devel libsigsegv-devel ctags automake autoconf libtool ragel cmake re2c
# FreeBSD
pkg install git gmake gmp libsigsegv openssl automake autoconf ragel cmake re2c libtool pkg install git gmake gmp libsigsegv openssl automake autoconf ragel cmake re2c libtool
#### Archlinux # Arch
pacman -S gcc gmp libsigsegv openssl automake autoconf ragel cmake re2c libtool ncurses pacman -S gcc gmp libsigsegv openssl automake autoconf ragel cmake re2c libtool ncurses
### Download and make # AWS
sudo yum —enablerepo epel install gcc gcc-c++ git gmp-devel openssl-devel ncurses-devel libsigsegv-devel ctags automake autoconf libtool cmake re2c
Clone the repo: ### Setting up swap
git clone https://github.com/urbit/urbit.git Urbit wants to map 2GB of memory when it boots up. We wont
necessarily use all this memory, we just want to see it. On a
normal modern PC or Mac, this is not an issue. On some small
cloud virtual machines (Amazon or Digital Ocean), the default
memory configuration is smaller than this, and you need to
manually configure a swapfile.
`cd` to the directory you just created: Digital Ocean has a post on adding swap [here](https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04). For Amazon theres a StackOverflow thread [here](http://stackoverflow.com/questions/17173972/how-do-you-add-swap-to-an-ec2-instance).
Dont spend a lot of time tweaking these settings; the simplest
thing is fine.
### Clone and make
Once your dependencies are installed the rest is easy:
git clone https://github.com/urbit/urbit
cd urbit cd urbit
Run `make`:
make make
curl -o urbit.pill https://bootstrap.urbit.org/latest.pill
(On FreeBSD, use `gmake` instead.) After running `make`, your Urbit executable lives at `bin/urbit`. The `.pill` file is a compiled binary of Arvo that Urbit uses to bootstrap itself.
The executable is `bin/urbit`. # Getting started
Fetch the latest bootstrapping pill: On disk your Urbit is an append-only log and a checkpoint. Or, in simpler terms, a directory where we keep all of your Urbits state. We call this a pier.
curl -o urbit.pill http://bootstrap.urbit.org/latest.pill ## Initialize
You can use your preferred way to fetch things from the web here. When you first start an Urbit we create this pier directory and write to it.
Urbit looks for a pill named `urbit.pill` in the current directory
by default, so if you have anything different, you'll need to tell
Urbit where it is (on first launch only) with the `-B` command-line
option.
Start To start with a planet (`~fintud-macrep`) and ticket (`~fortyv-tombyt-tabsen-sonres`):
=====
An urbit is a persistent server on the `%ames` P2P network. You'll bin/urbit -w fintud-macrep -t fortyv-tombyt-tabsen-sonres
create one of these servers now.
If you have an invitation, it's a planet like `~fintud-macrep` and a This will create a directory `fintud-macrep/` and begin the initialization process for that planet. Be patient, it can take a few minutes.
ticket like `~fortyv-tombyt-tabsen-sonres`. Run
urbit -w fintud-macrep -t fortyv-tombyt-tabsen-sonres Without a planet anyone can create a comet:
(You can leave the `~` on, but it annoys some Unix shells.) bin/urbit -c comet
If you don't have an invitation, pick a nickname for your comet, like This will create a directory `comet/` and start up a random 64-bit comet. You can specify any name you like.
`mycomet`. Urbit will randomly generate a 128-bit plot:
urbit -c mycomet ## Orientation
Either way, creating your urbit will take some time. Some of this When your Urbit is finished booting you should see a `dojo>` prompt. Welcome!
time involves creating keys; some of it involves downloading code
over Urbit itself. Go get a cup of coffee. Or a beer.
Wait until you see a prompt, something like By default your Urbit is quite bare bones. Let's take a very short stroll through what's running by default:
~fintud-macrep:dojo> ### Shell — `:dojo`
Your urbit is launched! Ladies and gentlemen, we are floating in The command prompt in front of you is a simple shell and Hoon REPL. Let's make sure it works:
space.
In either case you'll notice that we created a directory in unix called either `mycomet` or `fintud-macrep`. All of your state (a log and checkpoint) lives in that directory. You can move it around, but don't delete it! ~fitund-macrep:dojo> (add 2 2)
### Restarting Should produce:
If you want to shut your Urbit down you can `^d` from the `dojo>` prompt. To use Urbit normally after creating your planet or comet there's no need for the `-w -t` or `-c` options. > (add 2 2)
4
Instead: Good.
urbit fintud-macrep ### Messaging — `:talk`
or Use `^X` to change your prompt. Let's join the main Urbit chat channel:
urbit mycomet ~fitund-macrep:talk() ;join ~doznec/urbit-meta
### Continuity breaches / network reboots This may take a bit as `:talk` is stateful so your Urbit will download some backlog. `/urbit-meta` is the place to ask questions, get help and talk about anything Urbit related.
Urbit is still young, and we reboot the network from time to time. Urbit can upgrade itself over the air, but at this stage it's easier to bring in breaking api changes this way. Since our crypto is stateful we call this a 'continuity breach'. ### Web — `:tree`
If you have files in your Urbit you'd like to backup first make a copy of your pier. Then you'll need to shut down your urbit (with `^d`) and: Urbit is also accessible through the web. Try opening:
git pull origin master http://localhost:8080/
make clean; make
curl -o urbit.pill http://bootstrap.urbit.org/latest.pill
Then start over at the top of this section. in your favorite browser. You'll be prompted to use `+code`. This page was generated by `:tree`, the basic Urbit web interface. You can also access your Urbit through `http://fintud-macrep.urbit.org` (where `fintud-macrep` is your planet name).
Talk ### Filesystem — `%clay`
====
We use Urbit to talk to each other and coordinate about building the system. To join the main Urbit talk station use `^x` to switch to the `talk()` prompt, then run: `%clay`, the Urbit filesystem, isn't mounted to unix by default. Switch to the `:dojo` prompt and run:
;join ~doznec/urbit-meta ~fitund-macrep:dojo> |mount %
This should produce:
> |mount %
>=
which indicates the command was processed.
`|mount %` will cause a `home/` directory to appear inside your pier folder. Changes to these files are automatically synced into your Urbit.
Learn more Learn more
========== ==========
Urbit's own official planet `~winsen-pagdel` hosts the public docs If this is your first time using Urbit, and you've followed the instructions above, we'd recommend continuing the sequence [here](http://urbit.org/docs/using/admin/).
[here](http://urbit.org/docs). The docs also live in their own repo, [`urbit/docs`](http://github.com/urbit/docs).
### Docs
[urbit.org/docs](http://urbit.org/docs/) is the public documentation site.
The source is also in its own repo: [urbit/docs](http://github.com/urbit/docs).
### About
[urbit.org/posts](http://urbit.org/docs/) contains some essays on the theory and future of urbit.
### Keep in touch
- Check out the [urbit-dev](https://groups.google.com/forum/#!forum/urbit-dev) mailing list for long-form discussion.
- Follow [@urbit_](https://twitter.com/urbit\_) on Twitter.
- Email [urbit@urbit.org](mailto:urbit@urbit.org). We're happy to answer questions and chat.
Code of conduct
===============
Everyone involved in the Urbit project needs to understand and
respect our code of conduct, which is: "don't be rude."
If this is your first time using Urbit, we'd recommend starting [here](http://urbit.org/docs/user/basic#-basic-operation).
Contributing Contributing
============ ============