Redirect stdout and stderr to /dev/null for a script

gistfile1.txt

# from http://stackoverflow.com/questions/314675/how-do-i-redirect-the-output-of-an-entire-shell-script-within-the-script-itself

# save stdout and stderr to file descriptors 3 and 4, then redirect them to "foo"
exec 3>&1 4>&2 >foo 2>&1

# ...

# restore stdout and stderr
exec 1>&3 2>&4