PREIN
/bin/sh
getent group nginx > /dev/null || groupadd -r nginx getent passwd nginx > /dev/null || \ useradd -r -d /var/lib/nginx -g nginx \ -s /sbin/nologin -c "Nginx web server" nginx exit 0
/bin/sh
getent group nginx > /dev/null || groupadd -r nginx getent passwd nginx > /dev/null || \ useradd -r -d /var/lib/nginx -g nginx \ -s /sbin/nologin -c "Nginx web server" nginx exit 0