> Description: > read silently fails when stdin is piped to it. -u switch does not > help. > Redirection works fine. >
This and your other bug result from the fact that the commands in the pipe run in subshells. echo foo | read # doesn't work because a subshell cannot modify the parent process echo foo | exit # only exits the subshell exit < file # works because the redirection doesn't create a subshell read var <<< foo # again no subshell here It's the same thing as if you try: (read foo) or (exit foo) see also: http://wooledge.org:8000/BashFAQ#24
