check for corrupted memory

modules/memory-health.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+name='Memory Health'
+recommend=1
+if command -v memtester >/dev/null 2>&1; then
+    available=1
+else
+    available=0
+fi
+
+check() {
+    output=$(memtester 1G 1 | grep -v 'too many pages')
+    if printf '%s\n' "$output" | grep -qi 'fail'; then
+        warn "" "fail" "$output"
+    else
+        ok "" "ok" "$output"
+    fi
+}

modules/memory-usage.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-name='Memory'
+name='Memory Usage'
 available=1
 recommend=1