find replace

gistfile1.rb

#!/usr/local/bin/ruby1.9 -w

# findReplace.rb

#####################################
#                                   #
#  searches files in specified      #
#  path for specific string         #
#  and then replaces that string    #
#                                   #
#####################################

glob_path, exp_search,
exp_replace = '/home/sean/ruby-dev/findReplace/*.txt',
'homey', #string you are looking for
'dude'   #what you will replace that string with
Dir.glob(glob_path).each do |file| 
  buffer = File.new(file,'r').read.gsub(/#{exp_search}/,exp_replace)
  File.open(file,'w') {|fw| fw.write(buffer)}
end

=begin
SAMPLE OUTPUT:
sean@dude:~/ruby-dev/findReplace$ cat file02.txt ; cat file01.txt
file 2
homey
yo
file 1
homey
yo
sean@dude:~/ruby-dev/findReplace$ ./findReplace.rb 
sean@dude:~/ruby-dev/findReplace$ cat file02.txt ; cat file01.txt
file 2
dude
yo
file 1
dude
yo
=end