# php -v
PHP 7.4.13 (cli) (built: Nov 30 2020 20:40:09) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.13, Copyright (c), by Zend Technologies

# service --status-all
 [ - ]  apache-htcacheclean
 [ + ]  apache2
 [ + ]  apparmor
 [ + ]  bind9
 [ + ]  cloud-config
 [ + ]  cloud-final
 [ + ]  cloud-init
 [ + ]  cloud-init-local
 [ + ]  cron
 [ + ]  dbus
 [ + ]  dovecot
 [ - ]  exim4
 [ - ]  hwclock.sh
 [ + ]  kmod
 [ + ]  memcached
 [ + ]  mysql
 [ + ]  networking
 [ + ]  ntp
 [ + ]  php7.4-fpm
 [ + ]  postfix
 [ + ]  procps
 [ + ]  proftpd
 [ + ]  qemu-guest-agent
 [ + ]  resolvconf
 [ - ]  rsync
 [ + ]  rsyslog
 [ - ]  screen-cleanup
 [ + ]  ssh
 [ - ]  sudo
 [ + ]  udev
 [ + ]  unattended-upgrades
 [ + ]  unscd


~# service php7.4-fpm status
● php7.4-fpm.service - The PHP 7.4 FastCGI Process Manager
   Loaded: loaded (/lib/systemd/system/php7.4-fpm.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2020-12-09 12:23:30 CET; 1h 17min ago
     Docs: man:php-fpm7.4(8)
  Process: 1791 ExecStartPost=/usr/lib/php/php-fpm-socket-helper install /run/php/php-fpm.sock /etc/php/7.4/fpm/pool.d/www.conf 74 (code=exited, statu
 Main PID: 1788 (php-fpm7.4)
   Status: "Processes active: 0, idle: 1, Requests: 0, slow: 0, Traffic: 0req/sec"
    Tasks: 2 (limit: 2318)
   Memory: 13.9M
   CGroup: /system.slice/php7.4-fpm.service
           ├─1788 php-fpm: master process (/etc/php/7.4/fpm/php-fpm.conf)
           └─1790 php-fpm: pool dummy


~# ps faux | grep fpm
root      5532  0.0  0.0   3084   884 pts/1    S+   14:25   0:00  |       \_ grep fpm
root      4076  0.0  1.9 254976 38600 ?        Ss   13:53   0:00 php-fpm: master process (/etc/php/7.4/fpm/php-fpm.conf)
www-data  4077  0.0  0.5 254976 10468 ?        S    13:53   0:00  \_ php-fpm: pool dummy