diff --git a/setup/start/sudoers b/setup/start/sudoers
index 855c0f82b..12dc1e08c 100644
--- a/setup/start/sudoers
+++ b/setup/start/sudoers
@@ -65,5 +65,7 @@ yellowtent ALL=(root) NOPASSWD: /home/yellowtent/box/src/scripts/rmmount.sh
 Defaults!/home/yellowtent/box/src/scripts/remountmount.sh env_keep="HOME BOX_ENV"
 yellowtent ALL=(root) NOPASSWD: /home/yellowtent/box/src/scripts/remountmount.sh
 
-cloudron-support ALL=(ALL) NOPASSWD: ALL
+Defaults!/home/yellowtent/box/src/scripts/du.sh env_keep="HOME BOX_ENV"
+yellowtent ALL=(root) NOPASSWD: /home/yellowtent/box/src/scripts/du.sh
 
+cloudron-support ALL=(ALL) NOPASSWD: ALL
diff --git a/src/scripts/du.sh b/src/scripts/du.sh
new file mode 100755
index 000000000..6cd24c9e9
--- /dev/null
+++ b/src/scripts/du.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+if [[ ${EUID} -ne 0 ]]; then
+    echo "This script should be run as root." > /dev/stderr
+    exit 1
+fi
+
+if [[ $# -eq 0 ]]; then
+    echo "No arguments supplied"
+    exit 1
+fi
+
+if [[ "$1" == "--check" ]]; then
+    echo "OK"
+    exit 0
+fi
+
+path="$1"
+exclude="${2:-}"
+
+# -B1 makes du print block sizes and not apparent sizes (to match df which also uses block sizes)
+if [[ -z "${exclude}" ]]; then
+    du -DsB1 "${path}"
+else
+    du -DsB1 "${path}" --exclude "${exclude}"
+fi
+
diff --git a/src/system.js b/src/system.js
index 4b65f3e45..ca83f8f92 100644
--- a/src/system.js
+++ b/src/system.js
@@ -4,7 +4,8 @@ exports = module.exports = {
     getDisks,
     checkDiskSpace,
     getMemory,
-    getMemoryAllocation
+    getMemoryAllocation,
+    du
 };
 
 const apps = require('./apps.js'),
@@ -16,11 +17,22 @@ const apps = require('./apps.js'),
     docker = require('./docker.js'),
     notifications = require('./notifications.js'),
     os = require('os'),
+    path = require('path'),
     paths = require('./paths.js'),
     safe = require('safetydance'),
     settings = require('./settings.js'),
+    shell = require('./shell.js'),
     volumes = require('./volumes.js');
 
+const DU_CMD = path.join(__dirname, 'scripts/du.sh');
+
+async function du(file) {
+    const [error, stdoutResult] = await safe(shell.promises.sudo('system', [ DU_CMD, file ], {}));
+    if (error) throw new BoxError(BoxError.FS_ERROR, error);
+
+    return parseInt(stdoutResult.trim(), 10);
+}
+
 async function getVolumeDisks(appsDataDisk) {
     assert.strictEqual(typeof appsDataDisk, 'string');
 
diff --git a/src/test/applinks-test.js b/src/test/applinks-test.js
index e0aef82c7..71b16c7d5 100644
--- a/src/test/applinks-test.js
+++ b/src/test/applinks-test.js
@@ -52,7 +52,7 @@ describe('Applinks', function () {
         APPLINK_2.id = await applinks.add(JSON.parse(JSON.stringify(APPLINK_2)));
 
         const result = await applinks.get(APPLINK_2.id);
-        expect(result.upstreamUri).to.eql('https://www.google.com/');
+        expect(result.upstreamUri).to.eql('https://google.com/');
         expect(result.icon.length).to.not.eql(0);
     });
 
diff --git a/src/test/checkInstall b/src/test/checkInstall
index fd5505430..8f3edd64f 100755
--- a/src/test/checkInstall
+++ b/src/test/checkInstall
@@ -18,7 +18,7 @@ scripts=("${SOURCE_DIR}/src/scripts/clearvolume.sh" \
          "${SOURCE_DIR}/src/scripts/restartservice.sh" \
          "${SOURCE_DIR}/src/scripts/update.sh" \
          "${SOURCE_DIR}/src/scripts/collectlogs.sh" \
-         "${SOURCE_DIR}/src/scripts/configurecollectd.sh" \
+         "${SOURCE_DIR}/src/scripts/du.sh" \
          "${SOURCE_DIR}/src/scripts/remotesupport.sh" \
          "${SOURCE_DIR}/src/scripts/starttask.sh" \
          "${SOURCE_DIR}/src/scripts/stoptask.sh" \
diff --git a/src/test/system-test.js b/src/test/system-test.js
index f1854f4fa..7f6515dff 100644
--- a/src/test/system-test.js
+++ b/src/test/system-test.js
@@ -36,5 +36,12 @@ describe('System', function () {
         expect(memory.memory).to.be.a('number');
         expect(memory.swap).to.be.a('number');
     });
+
+    it('can get du', async function () {
+        const usage = await system.du(__dirname);
+        expect(usage).to.be.a('number');
+        console.log(usage);
+    });
+
 });