echo"`basename$0` is a tool to test that a R package (PACKAGE_TO_TEST) does not break packages that depend on it by running 'R CMD check' for each of them.
-p | --package NAME_OF_PACKAGE_TO_TEST : name of package to test (case sensible), all packages depending on this package are going to be checked by their R CMD CHECK
-c | --checklist CHECKLIST_FILE : file listing packages you want to check (each line should look like : PKG_NAME,PKG_VERSION,anything)