Pagely post-receive hook which updates submodules with each push. (https://support.pagely.com/hc/en-us/articles/203031474-Setting-up-git-on-Pagely-VPS-Enterprise-for-1-click-deployment)

post-receive

#!/bin/bash
#
## store the arguments given to the script
read oldrev newrev refname

## Where to store the log information about the updates
LOGFILE=./post-receive.log
# The deployed directory (the running site)
DEPLOYDIR=/directory/to/deploy/to
GITDIR=/directory/above/hooks/repo_name.git
blue='\033[1;34m'
no_color='\033[0m'

# %ae = Extract the user email from the last commit (author email)
USER_EMAIL=$(git log -1 --format=format:%ae HEAD)
# %an = Extract the username from the last commit (author name)
USER_NAME=$(git log -1 --format=format:%an HEAD)

## Record the fact that the push has been received
echo -e "Received Push Request at $( date +%Y-%m-%d:%H:%M:%S ) by $USER_NAME ($USER_EMAIL)" >> $LOGFILE
echo " - Old SHA: $oldrev New SHA: $newrev Branch Name: $refname" >> $LOGFILE

## Update the deployed copy
echo "Starting Deploy" >> $LOGFILE

echo " - Starting code deployment (to $DEPLOYDIR)"
# Move into the deploy directory
cd "$DEPLOYDIR";
# Then do a fresh checkout
git --git-dir="$GITDIR" --work-tree="$DEPLOYDIR" checkout -f;
# Then do a fresh update of all submodules.
git --git-dir="$GITDIR" --work-tree="$DEPLOYDIR" submodule update --init --recursive
# We're done in the deploy directory, so navigate back.
cd -

# Heyo, it's Zao!
echo -e "${blue}";
echo '                                                             ';
echo '             ,                                               ';
echo '             :                                               ';
echo '            :::                                              ';
echo '            :::                                              ';
echo '           :::::                                             ';
echo '           :::::,                                            ';
echo '          ::::.::                                            ';
echo '         .:::: ::,                                           ';
echo '         ::::  :::                                           ';
echo '        ::::: .:::                                           ';
echo '        ::::  ::::      .........    ......       ......     ';
echo '       ::::  ,::::             .    .`     .     ..    `.    ';
echo '      :::::  ::::.            ..           .`   `.      `.   ';
echo '      ::::  :::::  .          .            `.   .`       .   ';
echo '     ::::`  ::::.  .`        .             ..   .        .`  ';
echo '    ,::::  :::::   ,:       .          ......   .        ..  ';
echo '    ::::  ,::::    ::      ..        ..    `.   .        ..  ';
echo '    :::`  ::::,    ::      .        .      `.   .        .`  ';
echo '    :::  :::::     ::     .        `.      `.   .        .   ';
echo '    ::.  ::::`     ::    .`        `.      ..   ..       .   ';
echo '    ::  ,::::     ,::   ..          .     ...    ..     .    ';
echo '    .:  ::::      :::   .........   ... ..` .     ... ..     ';
echo '     :  :::,     .:::                  ``            ``      ';
echo '     ,  :::      ::::                                        ';
echo '        :::     ::::.                                        ';
echo '        ::     :::::                                         ';
echo '        ::    ::::::                                         ';
echo '        .:; .;:::::                                          ';
echo '         :;;;;;:::.                                          ';
echo '         `;;;;;::,                                           ';
echo '          `;;;;;`                                            ';
echo '              `                                              ';
echo '                                                             ';
echo -e "${no_color}";

echo " - Finished code deployment

"

echo "Finished Deploy

" >> $LOGFILE