Installer composer en tant qu'executable

getcomposer.bash

#!/bin/bash
BIN_DIRECTORY=$1
USER=$2

usage ()
{
echo "Usage : $0 bin_directory owner"
}

if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root"
   exit 1
fi

if [ "$#" -lt 2 ] ; then
    echo "Error: bad command usage"
    usage
    exit 1
fi

if [ ! -d $BIN_DIRECTORY ] ; then
    echo "Error: Bin directory doesnt exist"
    usage
    exit 1
fi


if [ -f "$BIN_DIRECTORY/composer" ] ; then
    echo "Error: composer file already exist in bin directory"
    exit 1
fi


if [ `grep -c "^$USER:" /etc/passwd` -ne 1 ] ; then
    echo "Error: user $USER doesnt exists"
    usage
    exit 1
fi

if ! type "php" > /dev/null ; then
    echo "Error: php is not installed"
fi


TMP_DIR=$(mktemp -d /tmp/installcomposer.tpm.XXXXXXXXXX) || { echo "Error: failed to create tmp dir"; exit 1; }

wget -O $TMP_DIR/installer https://getcomposer.org/installer
(cd $TMP_DIR ; php installer)

if [ ! -f "$TMP_DIR/composer.phar" ] ; then
    echo "Error: cant install composer"
    exit 1
fi

mv "$TMP_DIR/composer.phar" "$BIN_DIRECTORY/composer"
chown $USER:$USER $BIN_DIRECTORY/composer
chmod +x $BIN_DIRECTORY/composer

echo "Done"