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diff --git a/src/utils/filesystem.hpp b/src/utils/filesystem.hpp
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+++ b/src/utils/filesystem.hpp
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+////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 Leo Tenenbaum
+// This file is part of GraphColoring.
+//
+// GraphColoring is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GraphColoring is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with GraphColoring.  If not, see <https://www.gnu.org/licenses/>.
+////////////////////////////////////////////////////////////////////////////////
+#ifndef GRAPHCOLORING_UTILS_FILESYSTEM_H_
+#define GRAPHCOLORING_UTILS_FILESYSTEM_H_
+
+#include <string>
+
+namespace utils {
+namespace filesystem {
+
+extern void remove_file(std::string path);
+extern void copy_file(std::string src, std::string dest);
+extern void create_directory(std::string path);
+extern bool directory_exists(std::string path);
+
+} // namespace filesystem
+} // namespace utils
+
+#endif // GRAPHCOLORING_UTILS_FILESYSTEM_H_