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# The basics of processes in Elixir
## Examples
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```elixir
spawn(fn -> 3 end)
```
```elixir
pid = spawn(fn -> 3 end)
```
```elixir
Process.alive?(pid)
```
```elixir
pid = spawn(fn -> IO.puts("Adolfo") end)
```
```elixir
Process.alive?(pid)
```
```elixir
Process.sleep(10000)
```
```elixir
pid =
spawn(fn ->
IO.puts("Starting")
Process.sleep(10000)
IO.puts("The end")
end)
```
```elixir
# click evaluate while the process is sleeping
Process.alive?(pid)
```
```elixir
defmodule Example do
def listen do
receive do
{:ok, "hello"} -> IO.puts("World")
_ -> listen()
end
end
end
```
```elixir
pid = spawn(Example, :listen, [])
```
```elixir
Process.alive?(pid)
```
```elixir
send(pid, :hi)
```
```elixir
send(pid, {:ok, "hello"})
```
See source 
