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Use $() for command substitution instead of backticks/quotes.

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One of the example was using quotes instead of backticks.
Backticks are the "older" way of doing things, which has a number of
disadvantes:

    http://mywiki.wooledge.org/BashFAQ/082

Here I'm more worried about readability as depending on font and "smart"
editor helping on the web, many people may confuse ` with ', it could
end up modifying formatting on makrdown powered website... etc...
This commit is contained in:
Matthias Bussonnier
2018-10-04 13:44:16 -07:00
parent cff066a7be
commit 2e872069fb
5 changed files with 6 additions and 6 deletions
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4
docs/source/getting-started/security-basics.rst
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@@ -124,7 +124,7 @@ hex-encoded string. You can set it this way:
.. code-block:: bash
export JPY_COOKIE_SECRET=`openssl rand -hex 32`
export JPY_COOKIE_SECRET=$(openssl rand -hex 32)
For security reasons, this environment variable should only be visible to the
Hub. If you set it dynamically as above, all users will be logged out each time
@@ -173,7 +173,7 @@ using the ``CONFIGPROXY_AUTH_TOKEN`` environment variable:
.. code-block:: bash
export CONFIGPROXY_AUTH_TOKEN='openssl rand -hex 32'
export CONFIGPROXY_AUTH_TOKEN=$(openssl rand -hex 32)
This environment variable needs to be visible to the Hub and Proxy.

2
examples/cull-idle/README.md
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@@ -36,6 +36,6 @@ Generate an API token and store it in the `JUPYTERHUB_API_TOKEN` environment
variable. Run `cull_idle_servers.py` manually.
```bash
export JUPYTERHUB_API_TOKEN=`jupyterhub token`
export JUPYTERHUB_API_TOKEN=$(jupyterhub token)
python3 cull_idle_servers.py [--timeout=900] [--url=http://127.0.0.1:8081/hub/api]
```

2
examples/cull-idle/cull_idle_servers.py
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@@ -22,7 +22,7 @@ You can run this as a service managed by JupyterHub with this in your config::
Or run it manually by generating an API token and storing it in `JUPYTERHUB_API_TOKEN`:
export JUPYTERHUB_API_TOKEN=`jupyterhub token`
export JUPYTERHUB_API_TOKEN=$(jupyterhub token)
python3 cull_idle_servers.py [--timeout=900] [--url=http://127.0.0.1:8081/hub/api]
This script uses the same ``--timeout`` and ``--max-age`` values for

2
examples/external-oauth/README.md
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@@ -18,7 +18,7 @@ implementations in other web servers or languages.
1. generate an API token:
export JUPYTERHUB_API_TOKEN=`openssl rand -hex 32`
export JUPYTERHUB_API_TOKEN=$(openssl rand -hex 32)
2. launch a version of the the whoami service.
For `whoami-oauth`:

2
examples/service-whoami-flask/launch.sh
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@@ -1,4 +1,4 @@
export CONFIGPROXY_AUTH_TOKEN=`openssl rand -hex 32`
export CONFIGPROXY_AUTH_TOKEN=$(openssl rand -hex 32)
# start JupyterHub
jupyterhub --ip=127.0.0.1