diff --git a/troubleshoot/exercise1/hello-gatk.nf b/troubleshoot/exercise1/hello-gatk.nf old mode 100755 new mode 100644 diff --git a/troubleshoot/exercise2/hello-gatk.nf b/troubleshoot/exercise2/hello-gatk.nf old mode 100755 new mode 100644 diff --git a/troubleshoot/exercise3/hello-gatk.nf b/troubleshoot/exercise3/hello-gatk.nf old mode 100755 new mode 100644 diff --git a/troubleshoot/exercise4/hello-gatk.nf b/troubleshoot/exercise4/hello-gatk.nf old mode 100755 new mode 100644 diff --git a/troubleshoot/exercise5/hello-gatk.nf b/troubleshoot/exercise5/hello-gatk.nf old mode 100755 new mode 100644 diff --git a/troubleshoot/exercise6/hello-gatk.nf b/troubleshoot/exercise6/hello-gatk.nf old mode 100755 new mode 100644 diff --git a/troubleshoot/hello-gatk.nf b/troubleshoot/hello-gatk.nf old mode 100755 new mode 100644