add system.du

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
+