From: Matias Surdi Date: 2005-12-24T01:38:26+09:00 Subject: multithreaded file access Hi... I've a class which is run by many threads at the same time.... this class has to append a line to a text file eventually. I do this with: File.new('filename','a').puts("this is the string") Is this already thread safe??? how can I make it so????? Thanks...