Yep, I've hit this in Perl and Ruby and even once wrote a class to do something like Python's `communicate`. It's especially trappy if you want to run a command

Yep, I've hit this in Perl and Ruby and even once wrote a class to do something like Python's `communicate`. It's especially trappy if you want to run a command and both send stuff to its stdin and read stuff from its stdout. Bash makes it so easy, but it's a fraught with danger anywhere else!