awk / cut: Skip First Two Fields and Print the Rest of Line

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I would like to skip first two or three fields at the the beginning of a line and print the rest of line. Consider the following input:
    This is a test
    Giving back more than we take

I want my input file with the following output:
    a test
    more than we take

How do I printing lines from the nth field using awk under UNIX or Linux operating systems?

Varnish Change Web Server Signature Headers

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I’m using Varnish cache infront of Apache web server and I’d like change my web server signature from

Apache/2.2.8 (Ubuntu) mod_python/3.3.1 Python/2.5.2 mod_ssl/2.2.8 OpenSSL/0.9.8g

To:

Apache Web server

How do I change headers using Varnish?