.profile

# Append to ~/.profile (or ~/.bashrc)
# append to history, not overwrite
shopt -s histappend
# append command to history file before it's executed
export PROMPT_COMMAND="history -a"
# ignore duplicate consecutive commands
export HISTCONTROL=ignoreboth

# thanks to:
# http://www.linuxforums.org/forum/linux-programming-scripting/109516-retaining-bash-history-all-sessions.html
# and
# http://www.ducea.com/2006/05/15/linux-tips-take-control-of-your-bash_history/

undo

#!/usr/bin/env ruby
def exec_undo(line)
  line.gsub! 'script/generate', 'script/destroy'
  
  puts "Execute command \"#{line}\"? (yN)"
  if (gets.chomp.downcase == 'y')
    puts line
    system line
  end
end

history = '~/.bash_history'
lines = File.readlines(File.expand_path(history)).reverse

lines.each do |l|
  if l =~ /script\/generate/
    exec_undo l.chomp
    break
  end
end