Update several Wordpress Sites from a location using wp-update.sh

update-all-wp.sh

#!/usr/bin/env bash
##########################################################################
# Shellscript:  Update WordPress sites recursively from a directory
# Author     :  Paco Orozco <[email protected]>
# Requires   :  wp-cli, wp-update.sh
##########################################################################
# Changelog
# 20161220: 0.1
#       Inital release
##########################################################################

##########################################################################
# Configuration Section
##########################################################################

# Number of backups to maintain
NUM_OF_BACKUPS=2

##########################################################################
# DO NOT MODIFY BEYOND THIS LINE
##########################################################################
# Program name and version
PN=$( basename "$0" )
VER='0.1'

# Script exits immediately if any command within it exits with a non-zero status.
set -o errexit
# Script will catch the exit status of a previous command in a pipe.
set -o pipefail
# Script exits immediately if tries to use an undeclared variables.
set -o nounset
# Uncomment this to enable debug
# set -o xtrace

# Set VERBOSITY level. 
# 0 - No messages are shown
# 1 - Some informational messages. Defaults
# 2 - Debug
VERBOSITY=1

WP_PATH=""
WP_UPDATE_PATH="wp-update.sh"

##########################################################################
# Functions
##########################################################################
function warn () {
    local MESSAGE_TYPE=1
    if [ "$1" = "-l" ] ; then
        shift
        MESSAGE_TYPE=$1
        shift
    fi

    if (( "${MESSAGE_TYPE}" <= "${VERBOSITY}" )) ; then
        if [ "$1" = "-n" ] ; then
            shift; echo -n "$@" 
        else
            echo "$@"
        fi
    fi
}

function crit () {
        local ERROR=0
        [ "$1" = "-e" ] && shift; ERROR=$1; shift
        echo >&2 -e "${PN}: $@"
        [ ${ERROR} ] && exit ${ERROR}
}

function usage () {
    # Variables for formatting
    U=$(tput smul)  # Underline
    RU=$(tput rmul) # Remove underline
    B=$(tput bold)  # Bold
    N=$(tput sgr0)  # Normal

    cat <<-EOF
${B}Usage:${N}
    
    ${B}$0${N} -p ${U}directory${RU} [options]... 

${B}Options:${N}

    ${B}-h${N}  Display this help message

    ${B}-v${N}  Enable VERBOSITY mode. Use -vv for debug.

    ${B}-q${N}  Enable silent mode. No messages will be shown.

    ${B}-p${N} ${U}directory${RU}    
        Path where several WordPress blogs resides. This is a required flag.

        ${U}directory${RU}
        ├── blog1
        │   ├── wp-config.php
        │   └── blog-files
        └── blog2...

    This script will find all WP installations from this ${U}directory${RU} 
    and will backup up both the database and files before updating. Backups
    will be stored in the following format inside every blog directory:

        ${U}directory${RU}
        ├── blog1
        │   └── backups
        │       └── wp-backup_YYYY-MM-DD_HH:MM:SS
        │           ├── database.sql
        │           └── files.tar.gz
        └── blog2

${B}Example:${N}

    $0 ${B}-p${N} ${U}/var/www${RU}
        Minimal options. Will update all WordPress installations in the specified 
        directory. 

EOF
}

function check-requirements () {
    # Check if wp-cli is installed.
    if ! hash ${WP_UPDATE_PATH} 2>/dev/null ; then
        crit -e 1 "We require wp-update.sh.\nFor more info visit https://gist.github.com/pacoorozco/0b166e9595b82efdfd8547e22ba98bf0"
    fi
}

##########################################################################
# Main
##########################################################################

# Resetting OPTIND is necessary if getopts was used previously in the script.
OPTIND=1

# Process command line options
while getopts ":hvqp:" opt; do
    case $opt in
        h) 
            usage
            ;;
        p) 
            WP_PATH=${OPTARG}
            ;;
        v)
            VERBOSITY=$((${VERBOSITY} + 1))
            ;;
        q)
            VERBOSITY=0
            ;;
        ?) 
            echo "Invalid option: -$OPTARG" >&2
            exit 1 
            ;;
        :) 
            echo "Option -$OPTARG requires and arguement" >&2
            exit 1 
            ;;
    esac
done
# Shift off the options and optional --.
shift "$((OPTIND - 1))"

# Run appropriate functions based on options provided
if [ -z "${WP_PATH}" ] ; then
    usage
    exit 1
fi

check-requirements

if (( "${VERBOSITY}" < "2" )) ; then
    WP_UPDATE="${WP_UPDATE_PATH} -q"
else
    WP_UPDATE="${WP_UPDATE_PATH} -v"
fi

for BLOG in $( find ${WP_PATH} -maxdepth 2 -name "wp-config.php" )
do
    BLOG_PATH=$( dirname ${BLOG} )

    if [ "${VERBOSITY}" = "1" ] ; then 
        warn -n "Updating WordPress site on ${BLOG_PATH}... "
    else
        warn "Updating WordPress site on ${BLOG_PATH}... "
    fi

    BACKUP_PATH="${BLOG_PATH}/backups"
    ${WP_UPDATE} -p ${BLOG_PATH} -b ${BACKUP_PATH} -n ${NUM_OF_BACKUPS} || true

    if [ "$?" = "0" ] ; then
        warn "OK."
    else 
        warn "FAIL."
    fi
done