I’m using: SWI-Prolog version 8.1.9. Is there a simple way to temporarily redirect or echo (either is fine) all write and nl activity to a disk file? If not, what are the SWI-Prolog equivalents for the usual fopen/fwrite/fclose/etc. statements in other languages? I need to write a bunch of text t…

I believe you want with_output_to . There is also open/4 , which gives you a stream you can pass to format/3 (e.g. open("f.txt", write, Stream, []), format(Stream, "Hello!~n", []).)

jamessnvc already addressed the main builtins, so, another hint - not sure it fills your needs - but take a look to protocol

Simplest way to redirect write statements to a file from the console window?

Help!

EricGT July 17, 2019, 4:57pm 4

See: Wiki: How to - protocol/1

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Simplest way to redirect write statements to a file from the console window?

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