Shell / SSH WordPress Installer

wp-installer.sh

#!/bin/bash -e
clear

echo ""
echo "============================================="
echo "#                                           #"
echo "#     Welcome to the WordPress Installer    #"
echo "#                                           #"
echo "============================================="
echo ""

read -e -p "Database Name: " db_name
read -e -p "Database User: " db_user
read -e -p "Database Password: " db_pass
echo ""
read -e -p "Ready to Rock? (y/n): " run

if [ "$run" == n ]
then
    echo "Bye..."
    exit
else
    echo ""
    echo "============================================"
    echo "#           Installing WordPress           #"
    echo "============================================"
    echo ""
    # Download, extract, and delete the latest, compressed version of WordPress
    wget http://wordpress.org/latest.tar.gz
    tar -xzvf latest.tar.gz --strip-components=1
    rm latest.tar.gz

    # Let's copy the first part of wp-config-sampe.php and start piecing together wp-config.php
    grep -F -B1015 -A1 "@since 2.6.0" wp-config-sample.php > wp-config.php

    # Set database details with perl find and replace
    perl -pi -e "s/database_name_here/$db_name/g" wp-config.php
    perl -pi -e "s/username_here/$db_user/g" wp-config.php
    perl -pi -e "s/password_here/$db_pass/g" wp-config.php

    # Use the WordPress.org secret-key service to download a set of secret keys
    # Save it in a file named keys.salt
    wget https://api.wordpress.org/secret-key/1.1/salt/ -O keys.salt

    # Append the authorization keys to the wp-config.php file
    cat keys.salt >> wp-config.php
    # Get rid of the keys file
    rm keys.salt

    # Finish building the config file by appending the last part of wp-config-sample.php
    grep -F -B1 -A1015 "/**#@-*/" wp-config-sample.php >> wp-config.php

    echo ""
    echo "============================================"
    echo "#            Hardening WordPress           #"
    echo "============================================"
    echo ""
    # Set the appropriate directory permissions
    find -type d -exec chmod 755 {} \;
    # Set the appropriate file permissions
    find -type f -exec chmod 644 {} \;
    # Set wp-config.php to 440. This is commented out, because it may break some configurations. 
    # Uncomment at your own risk.
    # chmod 440 wp-config.php

    echo ""
    echo "============================================"
    echo "#                Cleaning Up               #"
    echo "============================================"
    echo ""
    # Deletes the currently-running script (self)
    rm ${0##*/}
    # Get rid of the crap default themes...leaving one for fallback
    rm -rf wp-content/themes/twentyfourteen || true
    rm -rf wp-content/themes/twentythirteen || true
    # Get rid of bogus plugins
    rm -rf wp-content/plugins/akismet || true
    rm wp-content/plugins/hello.php || true
    clear

    echo ""
    echo "============================================"
    echo "#     WordPress installation complete!     #"
    echo "#                   ---                    #"
    echo "#       Stay classy, WordPress nerds       #"
    echo "============================================"
    echo ""
fi

Also, if you'd rather input your database info in the WordPress installer, rather than the shell, you can use the following (completely avoids using the above shell script):

wget http://wordpress.org/latest.tar.gz && tar -xzvf latest.tar.gz --strip-components=1 && rm latest.tar.gz && rm -rf wp-content/themes/twentyfourteen ; rm -rf wp-content/themes/twentythirteen ; rm -rf wp-content/plugins/akismet ; rm -rf wp-content/plugins/hello.php ; find -type d -exec chmod 755 {} \; && find -type f -exec chmod 644 {} \;

The above snippet does everything the shell script does, minus the configuration of wp-config.php.