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It is required according to the posix standard. I strongly suggest that you do not depend on your implementation's behavior. Perhaps your awk allows that, but when run on a different implementation...

If your IDE upgrades a version, it may ruin all your projects. If automake upgrades a version, it may decide all your projects are invalid. And when any of these happen you'll have a very hard time...

I don't think you can do this without pipes or temporary files. Messages on stderr are usually meant for humans and stdout for parsing by programs anyway, so scripts usually capture stdout for their...

I agree with Corona688, cannot be done without pipes. However, you said 'named pipes' which technically are different beasts so I offer this "mess" for you to consider.


#!/usr/bin/env ksh ...