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  • Indeed this works, but requires a file to be fed to the while-loop. My actual code is more complex, and requires a modified multiline string to be fed to the while-loop. Your solution to write this multiline string to a temporary file works, but is there a solution that does not require writing a temporary file? Commented Mar 31, 2019 at 11:28
  • @Steiner See update answer. There's not much else you could do without using features of specific shells. Commented Mar 31, 2019 at 11:33
  • Thank you that answers my question. The suggestion at the end and the links provided are very helpful too! Commented Mar 31, 2019 at 11:43
  • @Steiner ... except for using a here-document. Well, there's a thing I didn't think of :-) Commented Mar 31, 2019 at 18:42