This page contains a wide range of common scripts / application setups for Ubuntu

## MongoDB 3.4 on Ubuntu 23.10

    wget http://launchpadlibrarian.net/668089858/libssl1.0.0_1.0.2n-1ubuntu5.13_amd64.deb
    sudo apt install ./libssl1.0.0_1.0.2n-1ubuntu5.13_amd64.deb
    sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10

    echo "deb http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list

Now edit `/etc/apt/sources.list.d/mongodb-org-3.4.list`:

    deb [trusted=yes] http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.4...

Then finish things up:

    sudo apt-get update --allow-unauthenticated
    sudo apt-get install -y mongodb-org

    sudo mkdir -p /data/db
    sudo chmod -R 777 /data/db

## Redis 6.0.7 on Ubuntu 23.10

    sudo apt-get install build-essential tcl
    cd /tmp
    curl -O http://download.redis.io/releases/redis-6.0.7.tar.gz
    tar xzvf redis-6.0.7.tar.gz
    cd redis-6.0.7

Install redis:

    make
    make test
    sudo make install

    sudo mkdir /etc/redis
    sudo cp /tmp/redis-6.0.7/redis.conf /etc/redis

Edit `/etc/redis/redis.conf` with the following changes:

- `supervised systemd`
- `dir /var/lib/redis`

Create systemd unit file for redis: `/etc/systemd/system/redis.service`:

    [Unit]
    Description=Redis In-Memory Data Store
    After=network.target

    [Service]
    User=redis
    Group=redis
    ExecStart=/usr/local/bin/redis-server /etc/redis/redis.conf
    ExecStop=/usr/local/bin/redis-cli shutdown
    Restart=always

    [Install]
    WantedBy=multi-user.target

Final steps:

    sudo adduser --system --group --no-create-home redis
    sudo mkdir /var/lib/redis
    sudo chown redis:redis /var/lib/redis
    sudo chmod 770 /var/lib/redis

## Ruby 2.7.2 with rbenv on Ubuntu 23.10

Edit the `/etc/apt/sources.list` file:

    deb [trusted=yes] http://security.ubuntu.com/ubuntu bionic-security main

Then run `sudo apt-get update`. After completion, install `libssl1.0-dev`:

    sudo apt-get install libssl1.0-dev

Install `rbenv` and be sure to include the following in `.zshrc`:

    export PATH="$HOME/.rbenv/bin:$PATH"
    eval "$(rbenv init -)"