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+.. template evaluated by: ./utils/searxng.sh searxng.doc.rst
+.. hint: all dollar-names are variables, dollar sign itself is quoted by: \\$
+
+.. START distro-packages
+
+.. tabs::
+
+  .. group-tab:: Ubuntu / debian
+
+    .. code-block:: sh
+
+      $ sudo -H apt-get install -y \\
+${debian}
+
+  .. group-tab:: Arch Linux
+
+    .. code-block:: sh
+
+      $ sudo -H pacman -S --noconfirm \\
+${arch}
+
+  .. group-tab::  Fedora / RHEL
+
+    .. code-block:: sh
+
+      $ sudo -H dnf install -y \\
+${fedora}
+
+.. END distro-packages
+
+.. START build-packages
+
+.. tabs::
+
+  .. group-tab:: Ubuntu / debian
+
+    .. code-block:: sh
+
+      $ sudo -H apt-get install -y \\
+${debian_build}
+
+  .. group-tab:: Arch Linux
+
+    .. code-block:: sh
+
+      $ sudo -H pacman -S --noconfirm \\
+${arch_build}
+
+  .. group-tab::  Fedora / RHEL
+
+    .. code-block:: sh
+
+      $ sudo -H dnf install -y \\
+${fedora_build}
+
+.. END build-packages
+
+.. START create user
+
+.. tabs::
+
+  .. group-tab:: bash
+
+    .. code-block:: sh
+
+      $ sudo -H useradd --shell /bin/bash --system \\
+          --home-dir \"$SERVICE_HOME\" \\
+          --comment 'Privacy-respecting metasearch engine' \\
+          $SERVICE_USER
+
+      $ sudo -H mkdir \"$SERVICE_HOME\"
+      $ sudo -H chown -R \"$SERVICE_GROUP:$SERVICE_GROUP\" \"$SERVICE_HOME\"
+
+.. END create user
+
+.. START clone searxng
+
+.. tabs::
+
+  .. group-tab:: bash
+
+    .. code-block:: sh
+
+       $ sudo -H -u ${SERVICE_USER} -i
+       (${SERVICE_USER})$ git clone \"$GIT_URL\" \\
+                          \"$SEARXNG_SRC\"
+
+.. END clone searxng
+
+.. START create virtualenv
+
+.. tabs::
+
+  .. group-tab:: bash
+
+    .. code-block:: sh
+
+       (${SERVICE_USER})$ python3 -m venv \"${SEARXNG_PYENV}\"
+       (${SERVICE_USER})$ echo \". ${SEARXNG_PYENV}/bin/activate\" \\
+                          >>  \"$SERVICE_HOME/.profile\"
+
+.. END create virtualenv
+
+.. START manage.sh update_packages
+
+.. tabs::
+
+  .. group-tab:: bash
+
+    .. code-block:: sh
+
+       $ sudo -H -u ${SERVICE_USER} -i
+
+       (${SERVICE_USER})$ command -v python && python --version
+       $SEARXNG_PYENV/bin/python
+       Python 3.8.1
+
+       # update pip's boilerplate ..
+       pip install -U pip
+       pip install -U setuptools
+       pip install -U wheel
+       pip install -U pyyaml
+
+       # jump to SearXNG's working tree and install SearXNG into virtualenv
+       (${SERVICE_USER})$ cd \"$SEARXNG_SRC\"
+       (${SERVICE_USER})$ pip install -e .
+
+
+.. END manage.sh update_packages
+
+.. START searxng config
+
+.. tabs::
+
+  .. group-tab:: Use default settings
+
+    .. code-block:: sh
+
+       $ sudo -H mkdir -p \"$(dirname ${SEARXNG_SETTINGS_PATH})\"
+       $ sudo -H cp \"$SEARXNG_SRC/utils/templates/etc/searxng/settings.yml\" \\
+                    \"${SEARXNG_SETTINGS_PATH}\"
+
+  .. group-tab:: minimal setup
+
+    .. code-block:: sh
+
+       $ sudo -H sed -i -e \"s/ultrasecretkey/\$(openssl rand -hex 16)/g\" \\
+                     \"$SEARXNG_SETTINGS_PATH\"
+
+.. END searxng config
+
+.. START check searxng installation
+
+.. tabs::
+
+  .. group-tab:: bash
+
+    .. code-block:: sh
+
+       # enable debug ..
+       $ sudo -H sed -i -e \"s/debug : False/debug : True/g\" \"$SEARXNG_SETTINGS_PATH\"
+
+       # start webapp
+       $ sudo -H -u ${SERVICE_USER} -i
+       (${SERVICE_USER})$ cd ${SEARXNG_SRC}
+       (${SERVICE_USER})$ export SEARXNG_SETTINGS_PATH=\"${SEARXNG_SETTINGS_PATH}\"
+       (${SERVICE_USER})$ python searx/webapp.py
+
+       # disable debug
+       $ sudo -H sed -i -e \"s/debug : True/debug : False/g\" \"$SEARXNG_SETTINGS_PATH\"
+
+Open WEB browser and visit http://$SEARXNG_INTERNAL_HTTP .  If you are inside a
+container or in a script, test with curl:
+
+.. tabs::
+
+  .. group-tab:: WEB browser
+
+    .. code-block:: sh
+
+       $ xdg-open http://$SEARXNG_INTERNAL_HTTP
+
+  .. group-tab:: curl
+
+    .. code-block:: none
+
+       $ curl --location --verbose --head --insecure $SEARXNG_INTERNAL_HTTP
+
+       *   Trying 127.0.0.1:8888...
+       * TCP_NODELAY set
+       * Connected to 127.0.0.1 (127.0.0.1) port 8888 (#0)
+       > HEAD / HTTP/1.1
+       > Host: 127.0.0.1:8888
+       > User-Agent: curl/7.68.0
+       > Accept: */*
+       >
+       * Mark bundle as not supporting multiuse
+       * HTTP 1.0, assume close after body
+       < HTTP/1.0 200 OK
+       HTTP/1.0 200 OK
+       ...
+
+.. END check searxng installation