diff --git a/samples/blackmisc/main.cpp b/samples/blackmisc/main.cpp
index 1792670ed..76437389e 100644
--- a/samples/blackmisc/main.cpp
+++ b/samples/blackmisc/main.cpp
@@ -14,6 +14,7 @@
 #include "samplesjson.h"
 #include "samplesmetadata.h"
 #include "samplesperformance.h"
+#include "samplesfile.h"
 
 #include <stdio.h>
 #include <QCoreApplication>
@@ -55,9 +56,10 @@ int main(int argc, char *argv[])
         qtout << "6f .. string concatenation (+=, arg, ..)" << endl;
         qtout << "6g .. const &QString vs. QStringLiteral" << endl;
         qtout << "7 .. Algorithms" << endl;
+        qtout << "8 .. File/Directory" << endl;
         qtout << "-----" << endl;
         qtout << "x .. Bye" << endl;
-        QString s = qtin.readLine().toLower().trimmed();
+        const QString s = qtin.readLine().toLower().trimmed();
 
         if (s.startsWith("1")) { CSamplesJson::samples(); }
         else if (s.startsWith("2"))  { CSamplesChangeObject::samples(); }
@@ -72,6 +74,7 @@ int main(int argc, char *argv[])
         else if (s.startsWith("6f")) { CSamplesPerformance::samplesStringConcat(qtout); }
         else if (s.startsWith("6g")) { CSamplesPerformance::samplesStringLiteralVsConstQString(qtout); }
         else if (s.startsWith("7"))  { CSamplesAlgorithm::samples(); }
+        else if (s.startsWith("8"))  { CSamplesFile::samples(qtout); }
         else if (s.startsWith("x"))  { break; }
     }
     while (true);
diff --git a/samples/blackmisc/samplesfile.cpp b/samples/blackmisc/samplesfile.cpp
new file mode 100644
index 000000000..47cf693d5
--- /dev/null
+++ b/samples/blackmisc/samplesfile.cpp
@@ -0,0 +1,29 @@
+/* Copyright (C) 2019
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
+ * or distributed except according to the terms contained in the LICENSE file.
+ */
+
+//! \file
+//! \ingroup sampleblackmisc
+
+#include "samplesfile.h"
+#include "blackmisc/directoryutils.h"
+#include "blackmisc/stringutils.h"
+
+using namespace BlackMisc;
+
+namespace BlackSample
+{
+    int CSamplesFile::samples(QTextStream &out)
+    {
+        const QString dir = "R:/temp";
+        out << "Testing directory search " << dir << endl;
+        const bool f = CDirectoryUtils::containsFileInDir(dir, "*.air", true);
+        out << "Found " << boolToYesNo(f) << endl;
+        return 0;
+    }
+
+} // namespace
diff --git a/samples/blackmisc/samplesfile.h b/samples/blackmisc/samplesfile.h
new file mode 100644
index 000000000..3c5983e30
--- /dev/null
+++ b/samples/blackmisc/samplesfile.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2019
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
+ * or distributed except according to the terms contained in the LICENSE file.
+ */
+
+//! \file
+//! \ingroup sampleblackmisc
+
+#ifndef BLACKSAMPLE_SAMPLESFILE_H
+#define BLACKSAMPLE_SAMPLESFILE_H
+
+#include <QTextStream>
+
+namespace BlackSample
+{
+    //! Samples for file/directory
+    class CSamplesFile
+    {
+    public:
+        //! Run the samples
+        static int samples(QTextStream &out);
+    };
+} // namespace
+
+#endif
diff --git a/src/blackmisc/directoryutils.cpp b/src/blackmisc/directoryutils.cpp
index 1c4625023..514fbf2d8 100644
--- a/src/blackmisc/directoryutils.cpp
+++ b/src/blackmisc/directoryutils.cpp
@@ -427,9 +427,9 @@ namespace BlackMisc
         return QUrl::fromPercentEncoding(directory.toUtf8());
     }
 
-    QStringList CDirectoryUtils::getSubDirectories(const QString &rootDir)
+    QStringList CDirectoryUtils::getRelativeSubDirectories(const QString &rootDir)
     {
-        QDir dir(rootDir);
+        const QDir dir(rootDir);
         if (!dir.exists()) { return QStringList(); }
         return dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot | QDir::NoSymLinks);
     }
@@ -443,10 +443,11 @@ namespace BlackMisc
         if (!directory.entryInfoList(nameFilter, QDir::Files | QDir::NoDot | QDir::NoDotDot).isEmpty()) { return true; }
 
         if (!recursively) { return false; }
-        const QStringList subDirs = CDirectoryUtils::getSubDirectories(dir);
-        for (const QString &subDir : subDirs)
+        const QStringList relSubDirs = CDirectoryUtils::getRelativeSubDirectories(dir);
+        for (const QString &relSubDir : relSubDirs)
         {
-            if (CDirectoryUtils::containsFileInDir(subDir, filter, recursively)) { return true; }
+            const QString absSubDir = CFileUtils::appendFilePaths(directory.absolutePath(), relSubDir);
+            if (CDirectoryUtils::containsFileInDir(absSubDir, filter, recursively)) { return true; }
         }
         return false;
     }
@@ -686,7 +687,7 @@ namespace BlackMisc
 
         if (nestedDirs)
         {
-            const QStringList relativeSubdirs = CDirectoryUtils::getSubDirectories(dirSource);
+            const QStringList relativeSubdirs = CDirectoryUtils::getRelativeSubDirectories(dirSource);
             if (!relativeSubdirs.isEmpty())
             {
                 for (const QString &relativeSubdir : relativeSubdirs)
diff --git a/src/blackmisc/directoryutils.h b/src/blackmisc/directoryutils.h
index 304fdaf10..4c92edd2a 100644
--- a/src/blackmisc/directoryutils.h
+++ b/src/blackmisc/directoryutils.h
@@ -155,7 +155,7 @@ namespace BlackMisc
         static QString decodeNormalizedDirectory(const QString &directory);
 
         //! All sub directories of given dir
-        static QStringList getSubDirectories(const QString &rootDir);
+        static QStringList getRelativeSubDirectories(const QString &rootDir);
 
         //! Any file with filter like "*.txt"
         static bool containsFileInDir(const QString &dir, const QString &filter, bool recursively);