রুবি ফাইল সিস্টেম

file = File.open("./api/document.txt", "r")
data = file.read

puts data
file.close

file = File.open("./api/document.txt", "r")
data = file.read

puts data

file.close

file = File.open("./api/document.txt", "r")

file.close

puts file.closed?

file = "./api/document.txt"

File.delete(file) if File.exist?(file)

puts "file delete successful"

file = File.open("./api/document.txt", "w")

file.write("প্রোগ্রামিং শিখুন - প্রোগ্রামিং দিয়ে আপনার ক্যারিয়ার গড়ুন")
file.close

puts "file writing successful"

require "fileutils"

file = "./api/document.txt"
copy = "./api/temp/doc.txt"

FileUtils.copy(file, copy)

puts "file copy successful"

source = "./api/temp/doc.txt"
change = "./api/temp/document.txt"

File.rename(source, change)

puts "file rename successful"

require "fileutils"

source = "./api/temp/document.txt"
target = "./api/root/document.txt"

FileUtils.mv(source, target)

puts "file transfer successful"

file = "./api/document.txt"

puts File.exist?(file)

file = "./api/document.txt"

puts File.size(file)