Run WP-CLI commands on multiple sites

superwp.sh

#!/bin/bash

# A bash script to run WP-CLI commands on multiple sites at once. It requires WP-CLI, obviously (https://wp-cli.org/).
# The script will search for all WordPress installations under a given directory and will run the command. You can declare more than one such directories.
# You don't have to modify the script every time you add a new site. As long as the new site is under a declared parent directory, its database will be backed up.
# After creating the file, don't forget to make it executable by doing: `chmod +x superwp.sh`. Then, include it to `.bashrc` or `.bash_profile` by adding `source path/to/superwp.sh`.
# Then, you can run any `wp` command you like on all the sites of your server, by replacing `wp` with `superwp`. 
# Example: `superwp plugin list`.

# We use a function, in order to be able to call it as many times as we want, for as many different directories containing WordPress installations there are on the server
superwp() {

        # Set PATH environment variable
        export PATH="/usr/local/bin:/usr/bin:/bin"

        # The base path on your server (you might need to change that)
        BASEPATH=/var/www

        # In case $1 contained a path, we should remove it from the wp command
        if [ -d "$1" ]; then
                dir=$1
                shift
        else
                dir="$BASEPATH"
        fi

        # $@ stores all the command line arguments
        wp_command=$@

        # Iterate over all folders under the given parent directory
        for d in $dir/* ; do

                # Determine correct directory depending on whether BASEPATH is default
                wp_dir="$d"
                if [ "$dir" = "$BASEPATH" ]; then
                        wp_dir="$d/htdocs"
                fi

                # Check if the folder is indeed a WordPress installation by searching for a wp-config.php file
                if [ -f $d/wp-config.php ]; then
                        echo -e "\e[32mRunning in $d\e[0m"

                        # Update core
                        sudo /usr/local/bin/wp --path="$wp_dir" $wp_command
                fi
        done
}