How to remove some lines from the output of a bash script?

Question

linux

There is a bash script. It contains the command: Everything works fine, only these lines interfere: I need to remove the lines "tar: Ignoring unknown extended header keyword 'SCHILY.fflags'" from the output of the script execution Thank you!
tar -xpJf $package_full -C $package/ /

Answer 1

tar -xpJf $package_full -C $package/ / 2>&1 | grep -v "SCHILY.fflags"