Your commandline is a perfectly good ruby IDE.

awk_vs_ruby.sh

# ugh, have to learn awk
cat /tmp/foo.txt  | awk '{print $2 " " $11}' | sort | uniq

# more prolix, but scales to complex scripts
cat /tmp/foo.txt | ruby -ne 'puts $_.split.values_at(1,10).join("\t")' | sort | uniq

cli_is_a_ruby_ide.sh

cat /tmp/foo.txt | ruby -e 'bins = Hash.new{|h,k| h[k] = []} ; $stdin.readlines.map(&:split).each{|r| bins[r[1]] << r[10] } ; bins.each{|band,obs| puts [band, obs.count,obs.join(",")].join("\t") }'

foo.txt

QSO: 14000 CW 2011-03-19 1229 W1JQ       599 0001  UV5U       599 0041
QSO: 14000 CW 2011-03-19 1232 W1JQ       599 0002  SO2O       599 0043
QSO: 21000 CW 2011-03-19 1235 W1JQ       599 0003  RG3K       599 VR  
QSO: 21000 CW 2011-03-19 1235 W1JQ       599 0004  UD3D       599 MO