my-env/install/composer

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#!/bin/bash
##makedesc: Install composer (latest)
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echo
echo "==============================================="
echo "Installing composer (latest)..."
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echo "==============================================="
echo
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# https://getcomposer.org/doc/faqs/how-to-install-composer-programmatically.md
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installed() {
command -v "$1" >/dev/null 2>&1
}
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! installed "php" && echo "WARNING: You need php to be installed"
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if installed "composer"; then
echo "WARNING: Removing current composer to install its actual version"
sudo apt remove -y --autoremove composer
sudo rm -f $HOME/.local/bin/composer
sudo rm -f /bin/composer
sudo rm -f /usr/bin/composer
sudo rm -f /usr/local/bin/composer
sudo rm -f /usr/src/composer
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rm $HOME/.local/bin/composer
fi
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mkdir -p $HOME/install && cd $HOME/install
# mkdir -p $HOME/.local/bin
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EXPECTED_CHECKSUM="$(php -r 'copy("https://composer.github.io/installer.sig", "php://stdout");')"
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# php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
wget https://getcomposer.org/installer -O composer-setup.php
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ACTUAL_CHECKSUM="$(php -r "echo hash_file('sha384', 'composer-setup.php');")"
if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then
>&2 echo 'ERROR: Invalid installer checksum'
rm composer-setup.php
exit 1
fi
php composer-setup.php --quiet
mv -f $HOME/install/composer.phar $HOME/.local/bin/composer
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cd - >/dev/null
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COMPOSER_GLOBAL_HOME="$(composer config -g home)"
NEWPATH="export PATH=\"$COMPOSER_GLOBAL_HOME/vendor/bin:\${PATH}\""
cat "${HOME}/.profile" | grep -qoh "$NEWPATH" || {
$NEWPATH
echo "$NEWPATH" >> "${HOME}/.profile"
}
echo
echo "Finish!"
echo
composer --version