Roboticus's suggestion should have worked, and is the simplest solution. Some programs (not many) do not write to stderr, but to the terminal driver direct. Check the documentation for the product you are using that it is actually writing to stderr. If that does not tell you, then run it under strace(1) or truss(1) to check (these are UNIX/Linux commands which trace kernel calls).

In reply to Re^3: How to stop printing the output of a command on screen when the command fails? by cdarke
in thread How to stop printing the output of a command on screen when the command fails? by perl_mystery

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