权限与属主

chmod 644 index.php
chmod 755 scripts/deploy.sh
chown -R www-data:www-data /var/www/site
# 仅目录可执行、文件可读写示例
find /var/www/site -type d -exec chmod 755 {} \;
find /var/www/site -type f -exec chmod 644 {} \;