stdout | WDL Specification

File stdout()

Returns the value of the executed command's standard output (stdout) as a File. The engine should give the file a random name and write it in a temporary directory, so as not to conflict with any other task output files.

Parameters: None

Returns: A File whose contents are the stdout generated by the command of the task where the function is called.

Example: echo_stdout_task.wdl

version 1.3

task echo_stdout {
  command <<< printf "hello world" >>>

  output {
    String message = read_string(stdout())
  }
}

Example input:

{}

Example output:

{
  "echo_stdout.message": "hello world"
}