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

v6.10.2

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

0.7.8

Operating system:

Mac osx

Description of the bug:

Exec function calls JSON.stringify on the command. This causes issues when trying to pass 64 bit unsigned long strings as arguments since JSON.stringify cannot natively handle them. They get truncated and data is lost.

Is JSON.stringify necessary or can we add a flag to avoid parsing like that?

exec('foo --id 909845429478596609')