{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### 5-7-3 ファイルの操作"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "File.rename 'data/src', 'data/dest'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " ドライブ C のボリューム ラベルは Windows です\n",
      " ボリューム シリアル番号は 30D7-D31C です\n",
      "\n",
      " C:\\Users\\chezo\\Documents\\source\\kawasakirb\\meetups\\pruby\\data のディレクトリ\n",
      "\n",
      "2017/12/20  19:50    <DIR>          .\n",
      "2017/12/20  19:50    <DIR>          ..\n",
      "2017/11/22  20:20                 1 counter\n",
      "2017/12/20  19:49    <DIR>          dest\n",
      "2017/10/25  20:07                68 fname.txt\n",
      "2017/10/25  19:56                 5 fname2.txt\n",
      "2017/10/25  20:10                16 utf16.txt\n",
      "               4 個のファイル                  90 バイト\n",
      "               3 個のディレクトリ  129,307,635,712 バイトの空き領域\n",
      "\n"
     ]
    }
   ],
   "source": [
    "puts `dir data`.force_encoding(\"CP932\").encode(\"UTF-8\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0"
      ]
     },
     "execution_count": 29,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "File.rename 'data/dest', 'data/dest2'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       ":ls_la"
      ]
     },
     "execution_count": 31,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "def ls_la(str)\n",
    "  puts `dir #{str}`.force_encoding(\"CP932\").encode(\"UTF-8\")\n",
    "end"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " ドライブ C のボリューム ラベルは Windows です\n",
      " ボリューム シリアル番号は 30D7-D31C です\n",
      "\n",
      " C:\\Users\\chezo\\Documents\\source\\kawasakirb\\meetups\\pruby\\data のディレクトリ\n",
      "\n",
      "2017/12/20  19:56    <DIR>          .\n",
      "2017/12/20  19:56    <DIR>          ..\n",
      "2017/11/22  20:20                 1 counter\n",
      "2017/12/20  19:49    <DIR>          dest2\n",
      "2017/10/25  20:07                68 fname.txt\n",
      "2017/10/25  19:56                 5 fname2.txt\n",
      "2017/10/25  20:10                16 utf16.txt\n",
      "               4 個のファイル                  90 バイト\n",
      "               3 個のディレクトリ  129,308,065,792 バイトの空き領域\n",
      "\n"
     ]
    }
   ],
   "source": [
    "ls_la('data')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {},
   "outputs": [
    {
     "ename": "Errno::EACCES",
     "evalue": "Permission denied @ rb_file_s_symlink - (data/dest2, data/dest_orig)",
     "output_type": "error",
     "traceback": [
      "\u001b[31mErrno::EACCES\u001b[0m: Permission denied @ rb_file_s_symlink - (data/dest2, data/dest_orig)",
      "\u001b[37m<main>:in `symlink'\u001b[0m",
      "\u001b[37m<main>:in `<main>'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/backend.rb:44:in `eval'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/backend.rb:44:in `eval'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/backend.rb:12:in `eval'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/kernel.rb:87:in `execute_request'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/kernel.rb:47:in `dispatch'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/kernel.rb:37:in `run'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/command.rb:70:in `run_kernel'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/lib/iruby/command.rb:34:in `run'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/iruby-0.3/bin/iruby:5:in `<top (required)>'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/bin/iruby:22:in `load'\u001b[0m",
      "\u001b[37mC:/Ruby24-x64/bin/iruby:22:in `<main>'\u001b[0m"
     ]
    }
   ],
   "source": [
    "File.symlink 'data/dest2', 'data/dest_orig'"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "次回、「属性や状態の取得」から"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Ruby 2.4.1",
   "language": "ruby",
   "name": "ruby"
  },
  "language_info": {
   "file_extension": ".rb",
   "mimetype": "application/x-ruby",
   "name": "ruby",
   "version": "2.4.1"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}