Automatic-generation-of-user_model-IO-of-mbsysc-projects.md

 To automatically generate the *user_model.c/.h* and *user_IO.c/.h* files of projects of mbsysC, this file execute the *Gen_mds_user.exe* that should have been generate under mbsysC *build* folder.  
 
-We provide 2 solutions to update user files automatically:
+We provide 3 solutions to update user files automatically:
  * A python script that iterate automatically in all subfolders
  * A shell script
+ * A unix shell command
 
 ## Python script
 
@@ -32,4 +33,9 @@ avec fichier=
 "user_models"  
 "user_IOs"  
 "user_all_id"  
-"user_hard_param"  
+"user_hard_param"  
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+
+## Unix single line command
+Open a terminal in *mbsysc* folder then call `find . -name \*.mbs -exec "./MBsysC/build/bin/Gen_mds_user" {} \;`.
+- `find` will list all files (recursively) ending with *.mbs*;
+- `-exec ...` will call `Gen_mds_user` with each file found.
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