Node version (or tell us if you're using electron or some other framework):

10.8.0

ShellJS version (the most recent version/Github branch you see the bug on):

0.8.2

Operating system:

MacOS

Description of the bug:

Logs sdterror on console if you try to execute an unknown command.

Expected behavior:

Do not log stderror on console

Example ShellJS command to reproduce the error:

const { stdout } = await shell.exec(`dpkg -l | grep ${packageName} | awk '{print $3}'`);

dpkg-query: error: failed to open package info file '/usr/local/var/lib/dpkg/status' for reading: No such file or directory```