diff --git a/lsflib/include/lsf.h b/lsflib/include/lsf.h
new file mode 100644
--- /dev/null
+++ b/lsflib/include/lsf.h
@@ -0,0 +1,36 @@
+#ifndef __LSF_H__
+#define __LSF_H__
+
+#ifndef LINE_LENGTH
+#define LINE_LENGTH 100
+#endif
+
+#include <stdio.h>
+#ifndef __LIST__H
+#include <list.h>
+#endif
+
+/* tokenizer splits a file into tokens */
+Node *tokenizer (FILE *, const char *);
+
+/* tokenchar splits a file into chars */
+int tokenchar (FILE *);
+
+/* get_line returns a multiline string str="...\n..." */
+char *get_line (const char *, const char *, size_t);
+
+/* isDir returns true, if a fd points to a dir */
+int isDir (char *);
+
+/* isDir returns true, if a fd points to a file */
+int isFile (char *);
+
+/* getdir prints a dir hierarchy */
+void getdir (char *, int);
+
+/* returns a pointer int*  */
+unsigned char *md5sum (char *);
+
+void md5recursive (char *, int);
+
+#endif