evaluate optional input length in bash

broadinstitute · Oct 20, 2023 · ce3c206 · ce3c206
1 parent c7c4112
commit ce3c206
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/pipes/WDL/tasks/tasks_terra.wdl b/pipes/WDL/tasks/tasks_terra.wdl
@@ -45,7 +45,11 @@ task get_gcloud_env_info {
   command {
     set -ex
 
-    ~{additional_command_to_run} ~{if additional_command_to_run then "| tee -a additional_command_stdout.log" else ""}
+    touch additional_command_stdout.log
+
+    if [ -n "~{default='' additional_command_to_run}" ]; then
+      ~{default='echo ""' additional_command_to_run} | tee -a additional_command_stdout.log
+    fi
 
     env | tee -a env_info.log