WordPress Bash Upgrade Script

# wp-upgrade.conf# Make sure you set the FIND_DIR variable to the directory your websites are located.# Usually this is /var/www but occasionally its /home (LQ)# Do not set it to be / because then it will also find your 'backups' and possibly# overwrite them (LQ)FIND_DIR=/var/www # Set this to the latest version of WordPress. This will be used as the comparison# with your existing installations to determine if they require upgrading.WP_CURRENT_VER="3.5.1"WP_URL=http://wordpress.org/latest.tar.gzWP_SOURCE_DIR=/tmp/wpupgradeMYSQL=/usr/local/bin/mysqlMYSQL_ADMIN=/usr/local/bin/mysqladminMYSQL_DUMP=/usr/local/bin/mysqldump

#!/bin/bash # WordPress core upgrade script (plugins will still have to be updated separately). # (c) Copyright (c) 2012, Anthony Bouch (tony@58bits.com). All rights reserved.## Redistribution and use in source and binary forms, with or without# modification, are permitted provided that the following conditions# are met:# 1. Redistributions of source code must retain the above copyright#    notice, this list of conditions and the following disclaimer.# 2. Redistributions in binary form must reproduce the above copyright#    notice, this list of conditions and the following disclaimer in the#    documentation and/or other materials provided with the distribution.## THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE# ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF# SUCH DAMAGE. # Based on a script written by Liz Quilty ( liz@rimuhosting.com )# Run as root# sudo sh wp-upgrade.sh # version 1.4 - refactored to use functions, curl and tar and removed WordPress MU # support (AB).# version 1.3 - keeping the permissions so that the web user can write to things OK (LQ)# version 1.2 - Patched for better portability by http://twitter.com/valthonis (LQ) #Set exit on any error.set-e # Source our configuration file.# NOTE - this is easily broken by path discoverable script sources, symlinks etc. # So be sure to only call the upgrade script with this in mind.# http://mywiki.wooledge.org/BashFAQ/028script_source=$([[$0 == /*]]&&echo"$0"||echo"${PWD}/${0#./}")config_source=${script_source%".sh"}".conf"source$config_source ###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#### FUNCTION: get_owner_group# Get the ownership and group values for a directory or a filename # and returns a value that can be used for chown.# Params: $1 = fully qualified directory or filename.# NOTE: May not work for symlinked directories.####~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##
get_owner_group(){if[-d"$1"]; thenecho $(ls-lah$1|awk'{print $3,$4}'|sed-n-e's/\ /:/'-e'2p')elif[-f"$1"]; thenecho $(ls-lah$1|awk'{print $3,$4}'|sed's/\ /:/')elseecho"get_owner_group requires a valid directory or filename as an argument.">&2exit1fi} ###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#### FUNCTION: get_wp_root# Get the installation directory for WordPress# Params: $1 = fully qualified filename for version.php####~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##
get_wp_root(){if[-z"$1"-o!-s"$1"]; thenecho"get_wp_root requires a valid filename as an argument.">&2exit1fiecho"$1"|sed s@wp-includes/version.php@@} ###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#### FUNCTION: get_installed_version# Get the installed version of WordPress# Params: $1 = fully qualified filename for version.php####~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##
get_installed_version(){if[-z"$1"-o!-s"$1"]; thenecho"get_installed_version requires a valid filename as an argument.">&2exit1fi# Fixed for version 3.5 (which is not 5 characters long)# echo grep wp_version "$1" | grep -v global | cut -c16-20echo $(grep'^\$wp_version'"$1"|cut-d"'"-f2)}  ###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#### FUNCTION: get_database_settings# Get the database settings for this installation# Params: $1 = the root directory of the WordPress installation####~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##
get_database_settings(){if[-z"$1"-o!-d"$1"]; thenecho"get_database_settings requires a valid directory as an argument.">&2exit1fi db_name=$(grep DB_NAME "${1}/wp-config.php"|cut-d"'"-f4)db_user=$(grep DB_USER "${1}/wp-config.php"|cut-d"'"-f4)db_pass=$(grep DB_PASSWORD "${1}/wp-config.php"|cut-d"'"-f4)table_prefix=$(grep'$table_prefix'"${1}/wp-config.php"|cut-d"'"-f2) echo$db_name$db_user$db_pass$table_prefix} ###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#### FUNCTION: get_latest_wp# Download the latest version of WordPress# Params: None# Notes: Needs better error handling####~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##
get_latest_wp(){mkdir-p$WP_SOURCE_DIRcd$WP_SOURCE_DIRecho'Getting latest version of WordPress... (removing previous download if any).'rm-rf${WP_SOURCE_DIR}/latest.tar.gzrm-rf${WP_SOURCE_DIR}/wordpress
  curl -O$WP_URL&&tar-xmzf latest.tar.gz &&chown-R $(get_owner_group $WP_SOURCE_DIR)${WP_SOURCE_DIR}/wordpress/if[$?-ne0]; thenecho"Download of the latest version of WordPress failed."exit1ficd - >/dev/nullecho'Done.'} ###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#### FUNCTION: do_upgrade# Perform the core WordPress upgrade on a discovered WordPress installation# Params: $1 = target directory####~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##
do_upgrade(){if[-z"$1"-o!-d"$1"]; thenecho"do_upgrade requires a valid directory as an argument."exit1fi wp_root=$1echo"Upgrading $wp_root" settings=$(get_database_settings $wp_root) db_name=$(echo"$settings"|awk'{print $1}')db_user=$(echo"$settings"|awk'{print $2}')db_pass=$(echo"$settings"|awk'{print $3}')table_prefix=$(echo"$settings"|awk'{print $4}') echo Checking connection to the database.db_test=$($MYSQL_ADMIN-u${db_user}-p${db_pass}ping) if["$db_test" == "mysqld is alive"]; thenecho Database connects fine.# 1. Get clean url and sitename for site.siteurl=$(echo SELECT option_value FROM ${table_prefix}options WHERE option_name=\'siteurl\' LIMIT 1|$MYSQL-u${db_user}-p${db_pass}${db_name}|sed s/option_value//)echo Site URL is $siteurlclean_url=$(echo$siteurl|sed s@http://@@g)sitename=$(echo SELECT option_value FROM ${table_prefix}options WHERE option_name=\'blogname\' LIMIT 1|$MYSQL-u${db_user}-p${db_pass}${db_name}|sed s/option_value//)echo Site name is $sitenameclean_sitename=${sitename///} # 2. Backup the database for the site.echo Making backup at /var/wp_upgrade/${clean_sitename}.sql and /var/wp_upgrade/${clean_sitename}.tar.gz \(you can delete these later\)mkdir-p/var/wp_upgrade/${clean_sitename}$MYSQL_DUMP-u${db_user}-p${db_pass}${db_name}>/var/wp_upgrade/${clean_sitename}/${clean_sitename}.sql && # 3. Take a complete backup of the WordPress site directory.tar-czf/var/wp_upgrade/${clean_sitename}/${clean_sitename}.tar.gz ${wp_root} # 4. Copying core files into site, getting the original owner permissionsorig_perm=$(get_owner_group ${wp_root}/wp-content)aliascp=cp#some distros have cp aliased to cp -i which asks before each overwriteecho"Setting up maintenance mode ..."touch$wp_root/.mainenanceecho Copying files over ... # http://codex.wordpress.org/Updating_WordPressrm-r${wp_root}/wp-includesrm-r${wp_root}/wp-admincp-a${WP_SOURCE_DIR}/wordpress/*$wp_root/ echo Changing ownership back to $orig_permchown-R$orig_perm$wp_root #echo You may need to go to $siteurl/wp-admin/upgrade.php to complete the upgradeecho Triggering database upgrade with curl --silent$siteurl/wp-admin/upgrade.php?step=1>/dev/null 2>&1
    curl --silent$siteurl/wp-admin/upgrade.php?step=1>/dev/null 2>&1 echo"Going back to normal mode..."rm$wp_root/.mainenanceecho"Upgrade at $wp_root complete."elseecho"Unable to connect to the database for this site. Please upgrade manually."fi} ###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~### Let's start...if[ $(whoami)!= "root"]thenecho"You need to run this script as root (preferably via sudo)."exit1fi # Download and extract the latest version of WordPress
get_latest_wp # Find all of our target WordPress installationswplist=$(find$FIND_DIR-wholename"*wp-includes/version.php") forfilein$wplist ; dowp_root=$(get_wp_root $file)installed_ver=$(get_installed_version $file) if[${installed_ver}!=  ${WP_CURRENT_VER}];thenecho"You have version $installed_ver located at $wp_root that needs upgrading to $WP_CURRENT_VER"echo-n"Would you like to upgrade it? [y/N] "read ansif[!-z"$ans"-a"$ans" == "y"];then#Fixed: Default non key entry now correctly equivalent to No.
      do_upgrade $wp_rootelseecho"Skipping ${wp_root}."fielseecho"Located WordPress at $wp_root. This installation is up-to-date."fidone