Live tool

Systemd Unit Helper

Generate practical systemd unit file patterns and service definitions for common Linux service scenarios.

Live 0 unit files generated Linux / UNIX Helper systemd Linux Services Unit Files

Open tool

Unit kind

Unit name

Template units like myworker@.service are supported.

Description

Service type

ExecStart

ExecStop

ExecReload

WorkingDirectory

User

Group

Restart policy

RestartSec

WantedBy target

Environment variables

One KEY=value pair per line.

EnvironmentFile

PIDFile

Requires

Wants

Before

After

ListenStream

Socket Service

OnCalendar

Timer Unit target

Add ProtectSystem=full

Add NoNewPrivileges=true

Add PrivateTmp=true

Include [Install] section

Reset

Unit kind Service

Unit name myapp.service

Service type simple

WantedBy multi-user.target

Generated unit file

[Unit]
Description=My application service
After=network.target

[Service]
Type=simple
ExecStart=/usr/bin/python3 /opt/myapp/app.py
WorkingDirectory=/opt/myapp
User=myapp
Group=myapp
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

systemctl commands

sudo nano /etc/systemd/system/myapp.service
sudo systemctl daemon-reload
sudo systemctl enable myapp.service
sudo systemctl start myapp.service
sudo systemctl status myapp.service
journalctl -u myapp.service -f

What this means

This helper generates a service unit baseline you can place under /etc/systemd/system before running daemon-reload and lifecycle commands.

The generated service unit includes WantedBy=multi-user.target, dependency fields where provided, and no explicit hardening directives.

Use this as a strong starting point, not as a substitute for real service design. You still need to validate dependencies, service behavior, security posture, logging expectations, and runtime failure modes.

Unit breakdown

Unit kind: Service
Unit name: myapp.service
Description: My application service
Requires: None
Wants: None
Before: None
After: network.target
Service type: simple
ExecStart: /usr/bin/python3 /opt/myapp/app.py
ExecStop: Not set
ExecReload: Not set
WorkingDirectory: /opt/myapp
User: myapp
Group: myapp
EnvironmentFile: Not set
PIDFile: Not set
Restart policy: on-failure
RestartSec: 5
Environment variables: None
ProtectSystem=full: No
NoNewPrivileges=true: No
PrivateTmp=true: No
Install section: Yes
WantedBy: multi-user.target@.service&descriptionInput=My%20templated%20worker&serviceType=simple&execStart=/opt/myapp/run.sh%20%i&runAsUser=myapp&runAsGroup=myapp&restartPolicy=on-failure&restartSec=5&wantedByTarget=multi-user.target&afterInput=network.target&enableInstallSection=true&privateTmp=true&noNewPrivileges=true">
                                Templated service
                            </a>

                            <a class="btn btn-outline-secondary btn-sm"
                               href="/Tools/SystemdUnitHelper?unitKind=socket&unitName=myapp.socket&descriptionInput=My%20application%20socket&listenStream=127.0.0.1:8080&socketServiceName=myapp.service&wantedByTarget=sockets.target&enableInstallSection=true">
                                Socket unit
                            </a>

                            <a class="btn btn-outline-secondary btn-sm"
                               href="/Tools/SystemdUnitHelper?unitKind=timer&unitName=maintenance.timer&descriptionInput=Nightly%20maintenance%20timer&onCalendarValue=daily&timerUnitName=maintenance.service&wantedByTarget=timers.target&enableInstallSection=true">
                                Timer unit
                            </a>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class="row g-4 mt-1">
            <div class="col-lg-8">
                <div class="tool-section-card">
                    <div class="tool-section-card__header">
                        <div>
                            <h2 class="tool-section-card__title">systemd quick guide</h2>
                            <p class="tool-section-card__subtitle mb-0">
                                Practical reminders for service, socket, and timer units on Linux systems.
                            </p>
                        </div>
                    </div>

                    <div class="tool-section-card__body">
                        <div class="row g-4">
                            <div class="col-md-4">
                                <h3 class="h6">Dependencies are intent</h3>
                                <p class="mb-0 text-muted">
                                    <code>Requires</code>, <code>Wants</code>, <code>Before</code>, and <code>After</code> define orchestration behavior. Sloppy dependency wiring creates fragile services.
                                </p>
                            </div>

                            <div class="col-md-4">
                                <h3 class="h6">Hardening is not decoration</h3>
                                <p class="mb-0 text-muted">
                                    <code>ProtectSystem</code>, <code>NoNewPrivileges</code>, and <code>PrivateTmp</code> are lightweight safeguards. Leaving everything wide open by default is weak operational hygiene.
                                </p>
                            </div>

                            <div class="col-md-4">
                                <h3 class="h6">Unit kind changes everything</h3>
                                <p class="mb-0 text-muted">
                                    A service, socket, and timer unit are not variations of the same thing. Use the right model or you are configuring noise, not automation.
                                </p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="col-lg-4">
                <div class="tool-section-card h-100">
                    <div class="tool-section-card__header">
                        <div>
                            <h2 class="tool-section-card__title">Related tools</h2>
                            <p class="tool-section-card__subtitle mb-0">
                                Use neighboring Linux tools for archives, permissions, and scheduling.
                            </p>
                        </div>
                    </div>

                    <div class="tool-section-card__body">
                        <div class="d-flex flex-column gap-2">
                            <a class="btn btn-outline-dark btn-sm" href="/Tools/TarCommandBuilder">
                                Open Tar Command Builder
                            </a>

                            <a class="btn btn-outline-dark btn-sm" href="/Tools/Crontab">
                                Open Crontab Builder
                            </a>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</section>


    </main>

    <footer b-v7jnbbpjqq class="site-footer footer text-muted">
        <div b-v7jnbbpjqq class="container py-4">
            <div b-v7jnbbpjqq class="row g-3 align-items-center">
                <div b-v7jnbbpjqq class="col-md-6">
                    <strong b-v7jnbbpjqq>cld2day</strong><br b-v7jnbbpjqq />
                    <span b-v7jnbbpjqq>Practical cloud, infrastructure, and engineering tools.</span>
                </div>
                <div b-v7jnbbpjqq class="col-md-6 text-md-end">
                    <a href="/About">About</a> ·
                    <a href="/Contact">Contact</a> ·
                    <a href="/Privacy">Privacy</a> ·
                    <a href="/CookiePolicy">Cookies</a> ·
                    <a href="/Terms">Terms</a> ·
                    <a href="/Disclaimer">Disclaimer</a>
                </div>
            </div>
        </div>
    </footer>

    <button b-v7jnbbpjqq id="scrollTopBtn" class="scroll-top-btn" aria-label="Scroll to top">
        <i b-v7jnbbpjqq class="bi bi-arrow-up-short"></i>
    </button>

    <script src="/lib/jquery/dist/jquery.min.js"></script>
    <script src="/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
    <script src="/js/site.js?v=y_Ngd8W21UpuCUhEqGbUKDEqFnNfTjAfb24GhJJGUyM"></script>

    <script>
        function loadAnalytics() {
            if (window.__analyticsLoaded) return;
            window.__analyticsLoaded = true;

            const gaScript = document.createElement("script");
            gaScript.async = true;
            gaScript.src = "https://www.googletagmanager.com/gtag/js?id=G-ZHYG2LSJ88";
            document.head.appendChild(gaScript);

            window.dataLayer = window.dataLayer || [];
            window.gtag = function () { dataLayer.push(arguments); };
            gtag('js', new Date());
            gtag('config', 'G-ZHYG2LSJ88');
        }

        function acceptCookies() {
            localStorage.setItem("cookie_consent", "accepted");
            const banner = document.getElementById("cookie-banner");
            if (banner) {
                banner.remove();
            }
            loadAnalytics();
        }

        function rejectCookies() {
            localStorage.setItem("cookie_consent", "rejected");
            const banner = document.getElementById("cookie-banner");
            if (banner) {
                banner.remove();
            }
        }

        function initCookieBanner() {
            const consent = localStorage.getItem("cookie_consent");

            if (consent === "accepted") {
                loadAnalytics();
                return;
            }

            if (consent === "rejected") {
                return;
            }

            const banner = document.createElement("div");
            banner.id = "cookie-banner";
            banner.innerHTML = `
                <div style="position:fixed;bottom:0;left:0;right:0;background:#111;color:#fff;padding:15px;z-index:9999;">
                    <div style="max-width:1100px;margin:0 auto;display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;">
                        <div>
                            This website uses cookies for analytics and performance. Read the
                            <a href="/CookiePolicy" style="color:#fff;text-decoration:underline;">Cookie Policy</a>.
                        </div>
                        <div style="display:flex;gap:10px;">
                            <button type="button" onclick="rejectCookies()" style="padding:6px 12px;border:1px solid #ccc;background:transparent;color:#fff;">
                                Reject
                            </button>
                            <button type="button" onclick="acceptCookies()" style="padding:6px 12px;border:0;background:#fff;color:#111;">
                                Accept
                            </button>
                        </div>
                    </div>
                </div>
            `;
            document.body.appendChild(banner);
        }

        function initScrollTopButton() {
            const btn = document.getElementById("scrollTopBtn");
            if (!btn) {
                return;
            }

            window.addEventListener("scroll", function () {
                if (window.scrollY > 400) {
                    btn.classList.add("is-visible");
                } else {
                    btn.classList.remove("is-visible");
                }
            });

            btn.addEventListener("click", function () {
                window.scrollTo({ top: 0, behavior: "smooth" });
            });
        }

        document.addEventListener("DOMContentLoaded", function () {
            initScrollTopButton();
        });

        window.addEventListener("load", function () {
            initCookieBanner();
        });
    </script>

    
    <script src="/lib/jquery-validation/dist/jquery.validate.min.js"></script>
<script src="/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>


    <script>
        document.addEventListener("DOMContentLoaded", function () {
            const copyButtons = document.querySelectorAll("[data-copy-target]");

            copyButtons.forEach(button => {
                button.addEventListener("click", async function () {
                    const targetId = button.getAttribute("data-copy-target");
                    const target = document.getElementById(targetId);
                    const originalText = button.textContent;

                    if (!target) {
                        button.textContent = "Copy failed";
                        setTimeout(() => {
                            button.textContent = originalText;
                        }, 1600);
                        return;
                    }

                    try {
                        await navigator.clipboard.writeText(target.value || target.textContent || "");
                        button.textContent = "Copied";
                    } catch {
                        button.textContent = "Copy failed";
                    }

                    setTimeout(() => {
                        button.textContent = originalText;
                    }, 1600);
                });
            });
        });
    </script>

</body>
</html>

Systemd Unit Helper

Send or bookmark it

Input

Result

What this means