Create new systemd service

create-service.sh

#!/bin/bash

# Check for help flag

if [ "$1" == "-h" ] || [ "$1" == "--help" ]
then
    echo "Create a systemd service file"
    echo "Usage: ./create-service.sh -s <service name> -c <command> -w <working directory> -E <run service at startup>"
    exit 0
fi

# Create new systemd service file

# Get service name from flag

while getopts s:c:w:E: flag
do
    case "${flag}" in
        s) service=${OPTARG};;
        c) command=${OPTARG};;
        w) workingdir=${OPTARG};;
        E) enable=true;;
    esac
done

# Check if service name is set

if [ -z "$service" ]
then
    echo "Service name is not set"
    exit 1
fi

# Check if command is set

if [ -z "$command" ]
then
    echo "Command is not set"
    exit 1
fi

# check if working directory is set

if [ -z "$workingdir" ]
then
    # Check if working directory exists
    if [ ! -d "$workingdir" ]
    then
        echo "Working directory does not exist"
        exit 1
    fi
fi

# check if command can be run 

if ! command -v $command &> /dev/null
then
    echo "Command cannot be run : $command"
    exit 1
fi

# stop command if running

if pgrep -x "$command" > /dev/null
then
    echo "Stopping $command"
    pkill $command
fi

# if $service does not contain .service then add it

if [[ ! $service == *.service ]]
then
    service="$service.service"
fi

# Check if service file already exists


if [ -f "/etc/systemd/system/$service" ]
then
    echo "Service file already exists : /etc/systemd/system/$service"
    # Ask if user wants to overwrite

    read -p "Do you want to overwrite the service file? (y/n) " -n 1 -r
    echo
    if [[ ! $REPLY =~ ^[Yy]$ ]]
    then
        exit 1
    fi

    # Remove service file

    rm /etc/systemd/system/$service
fi

# Print Details

echo "Service name: $service"
echo "Command: $command"
echo "Working directory: $workingdir"

# Create service file - if working directory is not set then don't include it

if [ -z "$workingdir" ]
then
    echo "[Unit]
Description=$service
Requires=network.target

[Service]
Type=simple
ExecStart=$command
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target" > /etc/systemd/system/$service

else

echo "[Unit]
Description=$service

[Service]
Type=simple
Requires=network.target
ExecStart=$command
WorkingDirectory=$workingdir
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target" > /etc/systemd/system/$service

fi

# Reload systemd

echo "Reloading systemd"
systemctl daemon-reload

# Enable service

if [ "$enable" = true ]
then
    echo "Enabling service"
    systemctl enable $service
fi

# Start service

echo "Starting service"
systemctl start $service

# Check status

echo "Checking status..."
systemctl status $service

Great script

As '-E' only set 'enable' to 'true' without OPTARG, it should have no semi after opt 'E'? Also Requires=network.target is deprecated.