Ruby Easy Grep Script

gistfile1.txt

#!/usr/bin/ruby
# from http://www.3till7.net/2010/02/23/convenient-file-searching-with-ruby-grep-and-file/

unless ARGV.length >= 2
  puts "Usage:  #$0 file_extension query"
  puts "\tExample: #$0 '*.h' 'struct list_head'"
  exit
end

unless ARGV.length == 2
  extra_args = ARGV[2...ARGV.length].join ', '
  puts "Warning:  extra arguments ignored: " << extra_args
end

file_extension = ARGV[0]
query = ARGV[1]
command = "find . -type f -name '#{file_extension}' -print0 | xargs -0 grep --line-number --color -H -o '#{query}'"
system 'clear'
puts "Searching #{file_extension} for \"#{query}\"..."
system command