Hi, I have a small problem with tee, which could be exemplified by the following code: wc -l largefile > 235324 largefile cat largefile |tee -i >(head > /dev/null) |wc -l > 390 tee doesn't forward the whole file but seems to stop when head don't read anymore. I thought the -i flag was supposed to block such behavior? I did this test with GNU coreutils 8.21 under fedora fc20. If you need more info, just let me know. Best, Karl