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Install psutil
==============

Linux, Windows, macOS (wheels)
------------------------------

psutil makes extensive use of C extension modules, meaning a C compiler is
required to build the sources.
Pre-compiled cPython wheels are provided on each release though, so on
**Linux**, **Windows** and **macOS** all you have to do is::

    pip3 install psutil

If wheels are not available for your platform or architecture, or you whish to
install psutil from sources, keep reading.

Linux (install from sources)
----------------------------

Ubuntu / Debian::

    sudo apt-get install gcc python3-dev
    pip3 install --user psutil --no-binary :all:

RedHat / CentOS::

    sudo yum install gcc python3-devel
    pip3 install --user psutil --no-binary :all:

Windows (install from sources)
------------------------------

In order to compile psutil on Windows you'll need **Visual Studio** compiler
(**MinGW** is not supported).
Here's a couple of guides describing how to do it: `link <https://blog.ionelmc.ro/2014/12/21/compiling-python-extensions-on-windows/>`__
and `link <https://cpython-core-tutorial.readthedocs.io/en/latest/build_cpython_windows.html>`__.
Once VS is installed do::

    pip3 install --user psutil --no-binary :all:

FreeBSD
-------

::

    pkg install python3 gcc
    python3 -m pip3 install psutil

OpenBSD
-------

::

    export PKG_PATH=http://ftp.eu.openbsd.org/pub/OpenBSD/`uname -r`/packages/`uname -m`/
    pkg_add -v python gcc
    python3 -m pip install psutil

NetBSD
------

::

    export PKG_PATH="ftp.netbsd.org/pub/pkgsrc/packages/NetBSD/`uname -m`/`uname -r`/All"
    pkg_add -v pkgin
    pkgin install python3 gcc
    python3 -m pip install psutil

Sun Solaris
-----------

If ``cc`` compiler is not installed create a symbolic link to ``gcc``::

    sudo ln -s /usr/bin/gcc /usr/local/bin/cc

Install::

    pkg install gcc
    python3 -m pip install psutil


Troubleshooting
===============

Install pip
-----------

**Pip** is shipped by default with Python 2.7.9+ and 3.4+.
If you don't have it you can install with wget::

    wget https://bootstrap.pypa.io/get-pip.py -O - | python3

...ow with curl::

    python3 < <(curl -s https://bootstrap.pypa.io/get-pip.py)

On Windows, `download pip <https://pip.pypa.io/en/latest/installing/>`__, open
cmd.exe and install it with::

    C:\Python27\python.exe get-pip.py

Permission errors (UNIX)
------------------------

If you bump into permission errors you have two options.

* Install psutil for your user only (non system-wide)::

    pip3 install --user psutil

* Install it as root user (system-wide):

    pip3 install --user psutil

* Prepend ``sudo`` (system-wide)::

    sudo pip3 install psutil