prepare new user and config file for apache

prepar_apache_app.sh

#!/bash/bin

if [ $# != 2 ]; then
    echo "usage: $0 app_name app_port" 1>&2
    exit 0
fi

app_name=$1
port=$2

echo "checking the port"

port_used=`lsof -iTCP:${port} | wc -c`

if [ $port_used -ne 0 ]; then
    echo "the port is already used"
    exit 1
fi

echo "checking the user"

user_exists=false
getent passwd $app_name >/dev/null 2>&1 && user_exists=true

if $user_exists; then
    echo "this user already exists"
    exit 1
fi

echo "preparing user for the site"

useradd $app_name
gpasswd -a apache $app_name

mkdir /home/$app_name/public_html

chown -R $app_name:$app_name /home/$app_name
chmod -R 775 /home/$app_name

echo "preparing setting for apache"

apache_conf="/etc/httpd/conf.d"

cp $apache_conf/template.conf.org $apache_conf/$app_name.conf

sed -i -E "s/\\\$PORT/${port}/g" $apache_conf/$app_name.conf
sed -i -E "s/\\\$APP_NAME/${app_name}/g" $apache_conf/$app_name.conf

service httpd restart