Hi, I reported bug 17457 a few months ago : when using -r and redirect output to a file in current directory, an infinite loop can occur, and output file can grow endlessly. Actually I don't known what happens when there is no more place on file system, and I don't want to try that.
I was lucky enough that when this happened to me, command was given from a command line, and I had time to understand something went wrong and I could kill grep process. But it's not unreasonable to imagine that this problem could arise from a script in a cron for example. Therefore, it could happen that a server is made out of service because of that. So, I'd like to suggest to mention that problem in the know bugs in a future release of grep regards, arno.
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