diff --git a/library.pl b/library.pl old mode 100644 new mode 100755 diff --git a/mailSimulationsSummary.pl b/mailSimulationsSummary.pl old mode 100644 new mode 100755 diff --git a/runMultiGenerationSimulations.pl b/runMultiGenerationSimulations.pl old mode 100644 new mode 100755 diff --git a/runSimulations.pl b/runSimulations.pl old mode 100644 new mode 100755