Ruby/File Directory/Text file

file = File.open( "myFile.txt" )
file.each { |line| print "#{file.lineno}. ", line }
file.close

# Put some stuff into a file.
open("sample_file", "w") do |f|
  f.write("This is line one.\nThis is line two.")
end
 
open("sample_file") { |f| f.readlines }
# => ["This is line one.\n", "This is line two."]

# Put some stuff into a file.
open("sample_file", "w") do |f|
  f.write("This is line one.\nThis is line two.")
end
File.read("sample_file")
# => "This is line one.\nThis is line two."

file = File.new( "yourFile.txt" )
file.readline # => "Let me not to the marriage of true minds\n"
file.readline # => "Admit impediments. Love is not love\n"
file.readline # => "Which alters when it alteration finds,\n"
file.close

def stringReplace(searchString, replaceString, fileName)
  aFile = File.open(fileName, "r")
  aString = aFile.read
  aFile.close
  aString.gsub!(searchString, replaceString)
  File.open(fileName, "w") { |file| file << aString }
end
stringReplace(*ARGV)

open("s.html", "wb") do |f|
  f << "<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">"
  f << "\xe2\x98\xBA"
end

#!/usr/bin/env ruby
file = File.open( "myFile.txt" )
file.each { |line| print "#{file.lineno}. ", line }
file.close