Bash script to start / stop LEMP services (Nginx, MySQL, and PHP-FPM) via systemd.

lemp.sh

#!/bin/bash

# Bash script to start / stop LEMP services (Nginx, MySQL, and PHP-FPM) via systemd.
# Usage lemp.sh [start|stop|restart]

# Check if the script run as root
if [ `whoami` != 'root' ]; then
  echo "You need to run this as root"
  exit
fi

# Check if script called with valid argument
if [ ! -z "$1" ] || [
  [ '$1' != 'start' ] &&
  [ '$1' != 'stop' ] &&
  [ '$1' != 'restart' ] ]; then
  echo "Invalid arguments"
  echo "Usage lemp.sh [start|stop|restart]"
  exit
fi

# Stopping services
if [ 'stop' = $1 ] || [ 'restart' = $1 ]; then
  echo "=== Stopping LEMP ==="
  
  # nginx
  if ! pgrep -x nginx > /dev/null; then
    echo "nginx is not running, skipping..."
  else
    echo "Stopping nginx..."
    systemctl stop nginx
  fi

  # php-fpm
  if ! pgrep php-fpm > /dev/null; then
    echo "php-fpm is not running, skipping..."
  else
    echo "Stopping php-fpm"
    systemctl stop php7.4-fpm
  fi
  
  # mysql 
  if ! pgrep -x mysqld > /dev/null; then
    echo "mysql is not running, skipping..."
  else
    echo "Stopping mysql"
    systemctl stop mysql
  fi  
fi

# Starting services
if [ 'start' = $1 ] || [ 'restart' = $1 ]; then
  echo "=== Starting LEMP ==="
  
  # nginx
  if pgrep -x nginx > /dev/null; then
    echo "nginx already started, skipping..."
  else
    echo "Starting nginx..."
    systemctl start nginx
  fi

  # php-fpm
  if pgrep php-fpm > /dev/null; then
    echo "php-fpm already started, skipping..."
  else
    echo "Starting php7.4-fpm"
    systemctl start php7.4-fpm
  fi
  
  # mysql
  if pgrep -x mysqld > /dev/null; then
    echo "mysql already started, skipping..."
  else
    echo "Starting mysql"
    systemctl start mysql
  fi
fi