Add entry for sapfile

README.md

@@ -1,2 +1,13 @@
 # tool.sap_shell_scripts
 Collection of shell scripts to be used in SAP environments
+
+- sapfile: A program to display SAP file types based on file name patterns or patterns inside a file archive of type rar, zip, or sapcar.
+  Requires:
+  - `lsar` (contained in the `unar` package from the EPEL RHEL repo)
+  - `zipinfo` (contained in the `unzip` RHEL package)
+  - `sapcar` (SAP program to handle sapcar files; typical filename: SAPCAR_1115-70006178.EXE)
+
+  For displaying all file patterns and SAP file types supported by the program, you can use the following command:
+```
+awk '!/BEGIN/&&!/END/&&/_sap_file_type=/{gsub (" ", ""); gsub ("\\{_sap_file_type=\"", ": "); gsub ("\"\\}", ""); print}' sapfile
+```