Hi, If i use : `strace bash -c "echo qsd | cat" 2>&1 | grep "close"` I get systematically :
close(3) = 0 close(3) = 0 close(3) = 0 close(3) = 0 close(3) = 0 close(3) = 0 close(3) = 0 close(3) = 0 close(4) = 0 close(4) = -1 EBADF (Bad file descriptor) close(3) = 0 close(3) = -1 EBADF (Bad file descriptor) I don't know if it's a bug or not. This error happens everytime a pipeline is used. GNU bash, version 4.3.42(1)-release (x86_64-unknown-linux-gnu) We discussed about it here : (french) zestedesavoir.com/forums/sujet/5779/bash-et-les-bugs/ Nheir sayed that he saw something in the file function execute_pipeline of the file execute_cmd.c
