Unix command to ignore lines that begins with X

I'm currently using a compiler that constantly returns warnings, I don't want to see the warnings. I've noticed that all warnings begin with the string "Note :", so I figured it's possible to filte开发者_如何学Cr out these lines.

I compile with

jrc *.jr

Is there a unix command that alters the output it gives to not print out the lines that begin with "Note :"?

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grep -v "^Note:"

Also, you may want to redirect stderr to stdout:

command 2>&1 | grep -v "^Note:"

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Another way would be to use sed.

sed '/^Note:/d'