Bash eating stderr output

问题

I'm calling a command line tool we wrote from bash on OS X and I have the problem that I don't get the stderr output but only printf's written to stdout.

That's my call:

echo "someInputString" |theTool -v someArg

I also tried:

echo "someInputString" |theTool -v someArg 2>&1

without success... I bet it's trivial but I don't know what needs to be done. Thanks in advance!

回答1:

Redirect the stderr stream output with 2>.

echo "someInputString" |theTool -v someArg 2> error_file

来源：https://stackoverflow.com/questions/16034286/bash-eating-stderr-output