pyenv install not found on ubuntu 14.04

[poc7667]

➜ ~ git clone https://github.com/yyuu/pyenv.git ~/.pyenv
Cloning into '/home/deploy/.pyenv'...
remote: Counting objects: 10957, done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 10957 (delta 0), reused 0 (delta 0), pack-reused 10950
Receiving objects: 100% (10957/10957), 1.91 MiB | 0 bytes/s, done.
Resolving deltas: 100% (7735/7735), done.
Checking connectivity... done.
➜ ~ zsh
➜ ~ pyenv
pyenv 20151006
Usage: pyenv []

Some useful pyenv commands are:
commands List all available pyenv commands
local Set or show the local application-specific Python version
global Set or show the global Python version
shell Set or show the shell-specific Python version
rehash Rehash pyenv shims (run this after installing executables)
version Show the current Python version and its origin
versions List all Python versions available to pyenv
which Display the full path to an executable
whence List all Python versions that contain the given executable

See `pyenv help ' for information on a specific command.
For full documentation, see: https://github.com/yyuu/pyenv#readme
➜ ~ pyenv init

Load pyenv automatically by adding

the following to the end of ~/.zshrc:

eval "$(pyenv init -)"

➜ ~ python install
python: can't open file 'install': [Errno 2] No such file or directory
➜ ~ pyenv install
pyenv: no such command `install'

[yyuu]

RTFM and read messages

https://github.com/yyuu/pyenv#basic-github-checkout

[samgalam]

This took me a while to figure out, but in my config, I had:
export PYENV_ROOT="~/.pyenv"
instead of:
export PYENV_ROOT="$HOME/.pyenv"

which was causing the install command to not be found even after running pyenv init etc.