xonsh/docs/linux.rst
2016-08-29 15:56:43 +03:00

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==========================
Linux Guide
==========================
Installation
============
You can install xonsh using ``conda``, ``pip``, or from source.
**conda:**
.. code-block:: console
$ conda config --add channels conda-forge
$ conda install xonsh
**pip:**
.. code-block:: console
$ pip install xonsh
**source:** Download the source `from github <https://github.com/xonsh/xonsh>`_
(`zip file <https://github.com/xonsh/xonsh/archive/master.zip>`_), then run
the following from the source directory,
.. code-block:: console
$ python setup.py install
Debian/Ubuntu users can install xonsh from the repository with:
**apt:**
.. code-block:: console
$ apt install xonsh
Fedora users can install xonsh from the repository with:
**dnf:**
.. code-block:: console
$ dnf install xonsh
Arch Linux users can install xonsh from the Arch User Repository with:
**yaourt:**
.. code-block:: console
$ yaourt -Sa xonsh
**aura:**
.. code-block:: console
$ aura -A xonsh
**pacaur:**
.. code-block:: console
$ pacaur -S xonsh
Note that some of these may require ``sudo``.
If you run into any problems, please let us know!
.. include:: add_to_shell.rst
.. include:: dependencies.rst
Possible conflicts with Bash
============================
Depending on how your installation of Bash is configured, Xonsh may have trouble
loading certain shell modules. Particularly if you see errors similar to this
when launching Xonsh:
.. code-block:: console
bash: module: line 1: syntax error: unexpected end of file
bash: error importing function definition for `BASH_FUNC_module'
bash: scl: line 1: syntax error: unexpected end of file
bash: error importing function definition for `BASH_FUNC_scl'
bash: module: line 1: syntax error: unexpected end of file
bash: error importing function definition for `BASH_FUNC_module'
bash: scl: line 1: syntax error: unexpected end of file
bash: error importing function definition for `BASH_FUNC_scl'
...You can correct the problem by unsetting the modules, by adding the following
lines to your ``~/.bashrc file``:
.. code-block:: console
unset module
unset scl
Default Ubuntu .bashrc breaks Foreign Shell Functions
=====================================================
Xonsh supports importing functions from foreign shells using the
`ForeignShellFunctionAlias` class, which calls functions as if they were
aliases. This is implemented by executing a command that sources the file
containing the function definition and then immediately calls the function with
any necessary arguments.
The default user `~/.bashrc` file in Ubuntu 15.10 has the following snippet at
the top, which causes the script to exit immediately if not run interactively.
.. code-block:: console
# If not running interactively, don't do anything
case $- in
*i*) ;;
*) return;;
esac
This means that any function you have added to the file after this point will be
registered as a xonsh alias but will fail on execution. Previous versions of
Ubuntu have a different test for interactivity at the top of the file that
yields the same problem.
New Terminal Tabs Do Not Start in Correct Directory
===================================================
If you use Gnome Terminal or another VTE terminal and it doesn't start new tabs
in the CWD of the original TAB, this is because of a custom VTE interface. To
fix this, please add ``{vte_new_tab_cwd}`` somewhere to you prompt:
.. code-block:: xonsh
$PROMPT = '{vte_new_tab_cwd}' + $PROMPT
This will issue the proper escape sequence to the terminal without otherwise
affecting the displayed prompt.
"Open Terminal Here" Action Does Not Work in Thunar
===================================================
If you use Thunar and "Open Terminal Here" action does not work,
you can try to replace a command for this action by the following:
.. code-block:: sh
exo-open --working-directory %f --launch TerminalEmulator xonsh --shell-type=best
In order to do this, go to ``Edit > Configure custom actions...``,
then choose ``Open Terminal Here`` and click on ``Edit currently selected action`` button.
Unable to use utf-8 characters inside xonsh
===========================================
If you are unable to use utf-8 (ie. non-ascii) characters in xonsh. For example if you get the following output
.. code-block:: xonsh
echo "ßðđ"
xonsh: For full traceback set: $XONSH_SHOW_TRACEBACK = True
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2: ordinal not in range(128)
The problem might be:
- Your locale is not set to utf-8, to check this you can set the content of the environment variable ``LC_TYPE``
- Your locale is correctly set but **after** xonsh started. This is typically the case if you set your ``LC_TYPE`` inside your ``.xonshrc`` and xonsh is your default/login shell. To fix this you should see the documentation of your operating system to know how to correctly setup environment variables before the shell start (``~/.pam_environment`` for example)