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

Topic		Replies	Views
Temporarily turn off output to the console window? Help!	11	1197	August 7, 2019
How to send the console text to a file? Help!	7	136	September 20, 2025
Using 'tell' with multiple files Help!	4	410	September 9, 2022
Temporarily redirect write/1 or current_output to a file Nice to know	3	576	July 14, 2020
Write plunit output to file Help!	2	393	March 12, 2019

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

Related topics