line='bin-66-776-33-22.hero.com - - [17/oct/2012:04:16:12 +0100] "GET /intro.txt http/1.0" 200 25 "-" "hero/2.1 (+http://h...content-available-to-author-only...o.com/intro.html'
awk -F'[[ ]' '{print $1,$5,$8,$10,$11}' <<< "$line"
bGluZT0nYmluLTY2LTc3Ni0zMy0yMi5oZXJvLmNvbSAtIC0gWzE3L29jdC8yMDEyOjA0OjE2OjEyICswMTAwXSAiR0VUIC9pbnRyby50eHQgaHR0cC8xLjAiIDIwMCAyNSAiLSIgImhlcm8vMi4xICgraHR0cDovL2guLi5jb250ZW50LWF2YWlsYWJsZS10by1hdXRob3Itb25seS4uLm8uY29tL2ludHJvLmh0bWwnCgphd2sgLUYnW1sgXScgJ3twcmludCAkMSwkNSwkOCwkMTAsJDExfScgPDw8ICIkbGluZSI=