2.1.1_linux_lesson1.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Raynard's Simple Linux Guide"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This is a simple linux code guide.\n",
    "\n",
    "Theoretically you can run many linux code by typing % or !! in jupyter notebook, but in that way you can really trash my server if you don't know what you are doing.\n",
    "\n",
    "So for training purposes. Please don't run any code here!!! Run it on your lovely vm for start."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Assuming you are using a debian based linux, like ubuntu or mint.\n",
    "\n",
    "If you are using graphical interface, open ctrl+shift+t, to open up a terminal interface\n",
    "\n",
    "All of following tutorial are using linux command"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Linux is based on unix sistem, Mac Os is also unix system. most of linux commands also works on mac."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Files System"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Linux isn't like windows, there isn't c:\\, or d:\\.\n",
    "\n",
    "It has a root location /\n",
    "\n",
    "Any file/folder path can trace back to root dir.\n",
    "\n",
    "Under root location there are many folders\n",
    "\n",
    "run \"ls\" to show a list of files/folders under current folder.\n",
    "\n",
    "run \"ls pathname\" to show a list of "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'/home/salvor/rapy'"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# check current folder\n",
    "# try it in your terminal\n",
    "# you don't have to type % or !! in your terminal\n",
    "%pwd\n",
    "# If you run pwd in your terminal, the defalt position is your home folder, usually /home/yourusername"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "currently we are under root folder -> home folder (containing files of users) \n",
    "\n",
    "-> salvor (user salvor) -> folder rapy, (containing all these notebook files)\n",
    "\n",
    "Remember all unix path, using only slash:/ not back slash\\ (remember slash, the one in guns & roses?)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Exploratory Data Analysis test - Analyst, Special Ops.xlsx  \u001b[0m\u001b[01;34mMNIST_data\u001b[0m/\r\n",
      "Lai Pratice.ipynb                                           \u001b[01;35mmnist_matrix.png\u001b[0m\r\n",
      "lesson1_alex.ipynb                                          \u001b[01;35mnn.png\u001b[0m\r\n",
      "lesson2_alex.ipynb                                          \u001b[01;34moriginal_notebooks\u001b[0m/\r\n",
      "lesson3_alex.ipynb                                          \u001b[01;35msoftmax-weights.png\u001b[0m\r\n",
      "lesson4_alex.ipynb                                          Untitled.ipynb\r\n",
      "linux_guide.ipynb                                           \u001b[01;36mus_perm_visas.csv\u001b[0m@\r\n"
     ]
    }
   ],
   "source": [
    "# Show the files and folders under current position\n",
    "%ls"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[0m\u001b[01;34mbin\u001b[0m/   \u001b[01;34metc\u001b[0m/         \u001b[01;34mlib\u001b[0m/         \u001b[01;34mmedia\u001b[0m/  \u001b[01;34mproc\u001b[0m/  \u001b[01;34msbin\u001b[0m/  \u001b[30;42mtmp\u001b[0m/  \u001b[01;36mvmlinuz\u001b[0m@\r\n",
      "\u001b[01;34mboot\u001b[0m/  \u001b[01;34mhome\u001b[0m/        \u001b[01;34mlib64\u001b[0m/       \u001b[01;34mmnt\u001b[0m/    \u001b[01;34mroot\u001b[0m/  \u001b[01;34msrv\u001b[0m/   \u001b[01;34musr\u001b[0m/\r\n",
      "\u001b[01;34mdev\u001b[0m/   \u001b[01;36minitrd.img\u001b[0m@  \u001b[01;34mlost+found\u001b[0m/  \u001b[01;34mopt\u001b[0m/    \u001b[01;34mrun\u001b[0m/   \u001b[01;34msys\u001b[0m/   \u001b[01;34mvar\u001b[0m/\r\n"
     ]
    }
   ],
   "source": [
    "# Show the files and folders under root position\n",
    "%ls /"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "bin: the execution files, the programs, short for binary\n",
    "\n",
    "etc: the configurations\n",
    "\n",
    "lib: the libraries, where you put all those softwares\n",
    "\n",
    "media: like the usb drive, the cd disks\n",
    "\n",
    "tmp: temporary files\n",
    "\n",
    "home: containing user files and folders\n",
    "\n",
    "dev: devices, you can actually find files representing cpu and hard drives\n",
    "\n",
    "\n",
    "... \n",
    "\n",
    "spare no effort remember this, you will get use to it shortly"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "lesson1.ipynb  lesson2.ipynb  lesson3.ipynb  lesson4.ipynb  us_perm_visas.csv\r\n"
     ]
    }
   ],
   "source": [
    "# Linux can follow relative path, the path from your current position\n",
    "%ls original_notebooks"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[0m\u001b[01;36mhtml\u001b[0m@\r\n"
     ]
    }
   ],
   "source": [
    "# or follow absolute path, the path from root dir /\n",
    "%ls /var/www"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[0m\u001b[01;34manaconda3\u001b[0m/                       \u001b[01;34mdjs\u001b[0m/        \u001b[01;34mnotebook\u001b[0m/  \u001b[01;34mrunpython\u001b[0m/\r\n",
      "Anaconda3-4.4.0-Linux-x86_64.sh  \u001b[01;34mdump\u001b[0m/       \u001b[01;34mpy27\u001b[0m/      \u001b[01;34msoftwares\u001b[0m/\r\n",
      "\u001b[01;34mbin\u001b[0m/                             \u001b[01;34metcbackup\u001b[0m/  \u001b[01;34mpy3\u001b[0m/       \u001b[01;34mstreisand\u001b[0m/\r\n",
      "\u001b[01;34mbook\u001b[0m/                            \u001b[01;34mhtml\u001b[0m/       \u001b[01;34mrapy\u001b[0m/      wpbackup.sql\r\n"
     ]
    }
   ],
   "source": [
    "# the double dots .. can have your path trace back a level, locate you to the parent folder\n",
    "%ls ../"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[0m\u001b[01;34mlsn\u001b[0m/  \u001b[01;34msalvor\u001b[0m/\r\n"
     ]
    }
   ],
   "source": [
    "# trace up 2 levels\n",
    "%ls ../.."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[0m\u001b[01;34manaconda3\u001b[0m/                       \u001b[01;34mdjs\u001b[0m/        \u001b[01;34mnotebook\u001b[0m/  \u001b[01;34mrunpython\u001b[0m/\r\n",
      "Anaconda3-4.4.0-Linux-x86_64.sh  \u001b[01;34mdump\u001b[0m/       \u001b[01;34mpy27\u001b[0m/      \u001b[01;34msoftwares\u001b[0m/\r\n",
      "\u001b[01;34mbin\u001b[0m/                             \u001b[01;34metcbackup\u001b[0m/  \u001b[01;34mpy3\u001b[0m/       \u001b[01;34mstreisand\u001b[0m/\r\n",
      "\u001b[01;34mbook\u001b[0m/                            \u001b[01;34mhtml\u001b[0m/       \u001b[01;34mrapy\u001b[0m/      wpbackup.sql\r\n"
     ]
    }
   ],
   "source": [
    "# trace up 2 levels then going down a level\n",
    "%ls ../../salvor"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "/home\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'/home'"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# cd will change you to other directory\n",
    "%cd ../\n",
    "%pwd"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "/\n",
      "\u001b[0m\u001b[01;34mbin\u001b[0m/   \u001b[01;34metc\u001b[0m/         \u001b[01;34mlib\u001b[0m/         \u001b[01;34mmedia\u001b[0m/  \u001b[01;34mproc\u001b[0m/  \u001b[01;34msbin\u001b[0m/  \u001b[30;42mtmp\u001b[0m/  \u001b[01;36mvmlinuz\u001b[0m@\r\n",
      "\u001b[01;34mboot\u001b[0m/  \u001b[01;34mhome\u001b[0m/        \u001b[01;34mlib64\u001b[0m/       \u001b[01;34mmnt\u001b[0m/    \u001b[01;34mroot\u001b[0m/  \u001b[01;34msrv\u001b[0m/   \u001b[01;34musr\u001b[0m/\r\n",
      "\u001b[01;34mdev\u001b[0m/   \u001b[01;36minitrd.img\u001b[0m@  \u001b[01;34mlost+found\u001b[0m/  \u001b[01;34mopt\u001b[0m/    \u001b[01;34mrun\u001b[0m/   \u001b[01;34msys\u001b[0m/   \u001b[01;34mvar\u001b[0m/\r\n"
     ]
    }
   ],
   "source": [
    "# absolute path also works in this case\n",
    "%cd /\n",
    "%pwd\n",
    "%ls"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "total 76\r\n",
      "drwxr-xr-x   2 root root  4096 Mar 14 06:23 \u001b[0m\u001b[01;34mbin\u001b[0m/\r\n",
      "drwxr-xr-x   3 root root  4096 Sep 15  2016 \u001b[01;34mboot\u001b[0m/\r\n",
      "drwxr-xr-x  13 root root 13660 Mar 17 16:51 \u001b[01;34mdev\u001b[0m/\r\n",
      "drwxr-xr-x  97 root root  4096 Aug 26 16:12 \u001b[01;34metc\u001b[0m/\r\n",
      "drwxr-xr-x   4 root root  4096 Aug 26 02:24 \u001b[01;34mhome\u001b[0m/\r\n",
      "lrwxrwxrwx   1 root root    32 Sep  9  2016 \u001b[01;36minitrd.img\u001b[0m -> boot/initrd.img-4.4.0-36-generic\r\n",
      "drwxr-xr-x  19 root root  4096 Mar  9 06:42 \u001b[01;34mlib\u001b[0m/\r\n",
      "drwxr-xr-x   2 root root  4096 Mar  9 06:41 \u001b[01;34mlib64\u001b[0m/\r\n",
      "drwx------   2 root root 16384 Jul 22  2016 \u001b[01;34mlost+found\u001b[0m/\r\n",
      "drwxr-xr-x   3 root root  4096 Jul 22  2016 \u001b[01;34mmedia\u001b[0m/\r\n",
      "drwxr-xr-x   2 root root  4096 Jul 22  2016 \u001b[01;34mmnt\u001b[0m/\r\n",
      "drwxr-xr-x   2 root root  4096 Jul 22  2016 \u001b[01;34mopt\u001b[0m/\r\n",
      "dr-xr-xr-x 151 root root     0 Mar 17 16:51 \u001b[01;34mproc\u001b[0m/\r\n",
      "drwx------   4 root root  4096 Mar 14 04:51 \u001b[01;34mroot\u001b[0m/\r\n",
      "drwxr-xr-x  20 root root   640 Sep  2 12:05 \u001b[01;34mrun\u001b[0m/\r\n",
      "drwxr-xr-x   2 root root  4096 Sep 15  2016 \u001b[01;34msbin\u001b[0m/\r\n",
      "drwxr-xr-x   3 root root  4096 Mar 23 08:26 \u001b[01;34msrv\u001b[0m/\r\n",
      "dr-xr-xr-x  13 root root     0 Mar 17 16:51 \u001b[01;34msys\u001b[0m/\r\n",
      "drwxrwxrwt  10 root root  4096 Sep  2 15:15 \u001b[30;42mtmp\u001b[0m/\r\n",
      "drwxr-xr-x  10 root root  4096 Jul 22  2016 \u001b[01;34musr\u001b[0m/\r\n",
      "drwxr-xr-x  12 root root  4096 Mar 23 07:52 \u001b[01;34mvar\u001b[0m/\r\n",
      "lrwxrwxrwx   1 root root    29 Sep  9  2016 \u001b[01;36mvmlinuz\u001b[0m -> boot/vmlinuz-4.4.0-36-generic\r\n"
     ]
    }
   ],
   "source": [
    "# command can have parameters, like -l\n",
    "# list out more detailed information\n",
    "%ls -l\n",
    "# ls -a show all files, including the hidden ones\n",
    "# ls -la show all files in listed details"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "-R parameters will show all the folders and files treely.\n",
    "\n",
    "Run as much as you can on your own ubuntu, don't run codes here.\n",
    "\n",
    "\"~\" represent the home folder of the current user\n",
    "\n",
    "The following is the same as ls -R /home/salvor (or in your case ls -R /home/alex)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "%ls -R ~"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Manual"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You don't have to remember all the parameter.\n",
    "\n",
    "If you forget you can use:\n",
    "\n",
    "man ls\n",
    "\n",
    "to check the manual of ls command. (press :q to quit manual)\n",
    "\n",
    "man python\n",
    "\n",
    "to check the manual of python ... you get the idea"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "most text files in linux are like txt file, only they don't end up with txt, in many cases they don't end up with anything.\n",
    "\n",
    "### Now we can show some powerful feature"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "/home/salvor\n"
     ]
    }
   ],
   "source": [
    "# cd without any path argument will take you to the home folder\n",
    "%cd"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "%ls -l > fileslist"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[0m\u001b[01;34manaconda3\u001b[0m/                       \u001b[01;34mdump\u001b[0m/       \u001b[01;34mpy27\u001b[0m/       \u001b[01;34mstreisand\u001b[0m/\r\n",
      "Anaconda3-4.4.0-Linux-x86_64.sh  \u001b[01;34metcbackup\u001b[0m/  \u001b[01;34mpy3\u001b[0m/        wpbackup.sql\r\n",
      "\u001b[01;34mbin\u001b[0m/                             fileslist   \u001b[01;34mrapy\u001b[0m/\r\n",
      "\u001b[01;34mbook\u001b[0m/                            \u001b[01;34mhtml\u001b[0m/       \u001b[01;34mrunpython\u001b[0m/\r\n",
      "\u001b[01;34mdjs\u001b[0m/                             \u001b[01;34mnotebook\u001b[0m/   \u001b[01;34msoftwares\u001b[0m/\r\n"
     ]
    }
   ],
   "source": [
    "# now you see there is a file under the current folder, which contains the result of running \"ls -l\"\n",
    "# > redirect the result of \"ls -l\" to a newly created file fileslist\n",
    "%ls"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "total 511780\r\n",
      "drwxrwxr-x 20 salvor salvor      4096 Aug 25 04:58 \u001b[0m\u001b[01;34manaconda3\u001b[0m/\r\n",
      "-rw-rw-r--  1 salvor salvor 523283080 Aug 25 04:55 Anaconda3-4.4.0-Linux-x86_64.sh\r\n",
      "drwxrwxr-x  2 salvor salvor      4096 Jun 18 07:24 \u001b[01;34mbin\u001b[0m/\r\n",
      "drwxrwxr-x  2 salvor salvor      4096 Mar 11 10:37 \u001b[01;34mbook\u001b[0m/\r\n",
      "drwxrwxr-x  6 salvor salvor      4096 Mar 12 03:25 \u001b[01;34mdjs\u001b[0m/\r\n",
      "drwxrwxr-x  3 salvor salvor      4096 Mar 11 10:25 \u001b[01;34mdump\u001b[0m/\r\n",
      "drwxr-xr-x  3 salvor salvor      4096 Mar 21 15:41 \u001b[01;34metcbackup\u001b[0m/\r\n",
      "-rw-rw-r--  1 salvor salvor         0 Sep  2 15:31 fileslist\r\n",
      "drwxrwxr-x  5 salvor salvor      4096 Mar 29 13:52 \u001b[01;34mhtml\u001b[0m/\r\n",
      "drwxrwxr-x  4 salvor salvor      4096 Sep  2 12:07 \u001b[01;34mnotebook\u001b[0m/\r\n",
      "drwxrwxr-x  3 salvor salvor      4096 Mar 11 11:15 \u001b[01;34mpy27\u001b[0m/\r\n",
      "drwxrwxr-x  3 salvor salvor      4096 Mar 12 03:27 \u001b[01;34mpy3\u001b[0m/\r\n",
      "drwxrwxr-x  5 salvor salvor      4096 Sep  2 15:15 \u001b[01;34mrapy\u001b[0m/\r\n",
      "drwxrwxr-x  3 salvor salvor      4096 Mar 11 10:35 \u001b[01;34mrunpython\u001b[0m/\r\n",
      "drwxrwxr-x  2 salvor salvor      4096 Mar 28 16:04 \u001b[01;34msoftwares\u001b[0m/\r\n",
      "drwxrwxr-x  5 salvor salvor      4096 Mar  9 07:07 \u001b[01;34mstreisand\u001b[0m/\r\n",
      "-rw-rw-r--  1 salvor salvor    716225 Mar 21 14:40 wpbackup.sql\r\n"
     ]
    }
   ],
   "source": [
    "# let's look at the contents of the file: fileslist\n",
    "# by using command cat\n",
    "%cat fileslist"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Tab to save some typing\n",
    "\n",
    "cd ~/Doc now press tab\n",
    "\n",
    "see?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "/home/salvor\n",
      "\u001b[0m\u001b[01;34manaconda3\u001b[0m/                       \u001b[01;34mdump\u001b[0m/       \u001b[01;34mpy27\u001b[0m/       \u001b[01;34mstreisand\u001b[0m/\r\n",
      "Anaconda3-4.4.0-Linux-x86_64.sh  \u001b[01;34metcbackup\u001b[0m/  \u001b[01;34mpy3\u001b[0m/        wpbackup.sql\r\n",
      "\u001b[01;34mbin\u001b[0m/                             fileslist   \u001b[01;34mrapy\u001b[0m/\r\n",
      "\u001b[01;34mbook\u001b[0m/                            \u001b[01;34mhtml\u001b[0m/       \u001b[01;34mrunpython\u001b[0m/\r\n",
      "\u001b[01;34mdjs\u001b[0m/                             \u001b[01;34mnotebook\u001b[0m/   \u001b[01;34msoftwares\u001b[0m/\r\n"
     ]
    }
   ],
   "source": [
    "# Try the start *, * can save you many typings\n",
    "%cd ana*"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "/home/salvor\n"
     ]
    }
   ],
   "source": [
    "# create 3 folders\n",
    "%cd\n",
    "%mkdir testfolder\n",
    "%mkdir testfolder2\n",
    "# testfolder3 is under test folder\n",
    "%mkdir testfolder/testfolder3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "testfolder:\r\n",
      "\u001b[0m\u001b[01;34mtestfolder3\u001b[0m/\r\n",
      "\r\n",
      "testfolder/testfolder3:\r\n"
     ]
    }
   ],
   "source": [
    "# show all folder treely\n",
    "%ls -R testfolder"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "testfolder:\r\n",
      "total 4\r\n",
      "drwxrwxr-x 2 salvor salvor 4096 Sep  2 15:41 \u001b[0m\u001b[01;34mtestfolder3\u001b[0m/\r\n",
      "\r\n",
      "testfolder/testfolder3:\r\n",
      "total 0\r\n",
      "\r\n",
      "testfolder2:\r\n",
      "total 0\r\n"
     ]
    }
   ],
   "source": [
    "# '*' will represent any files/folders satisfy this result\n",
    "%ls -lR test*"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# now we make another file\n",
    "%ls -lR test*> ~/filestest"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['==> fileslist <==',\n",
       " 'total 511780',\n",
       " 'drwxrwxr-x 20 salvor salvor      4096 Aug 25 04:58 \\x1b[0m\\x1b[01;34manaconda3\\x1b[0m/',\n",
       " '-rw-rw-r--  1 salvor salvor 523283080 Aug 25 04:55 Anaconda3-4.4.0-Linux-x86_64.sh',\n",
       " 'drwxrwxr-x  2 salvor salvor      4096 Jun 18 07:24 \\x1b[01;34mbin\\x1b[0m/',\n",
       " 'drwxrwxr-x  2 salvor salvor      4096 Mar 11 10:37 \\x1b[01;34mbook\\x1b[0m/',\n",
       " 'drwxrwxr-x  6 salvor salvor      4096 Mar 12 03:25 \\x1b[01;34mdjs\\x1b[0m/',\n",
       " 'drwxrwxr-x  3 salvor salvor      4096 Mar 11 10:25 \\x1b[01;34mdump\\x1b[0m/',\n",
       " 'drwxr-xr-x  3 salvor salvor      4096 Mar 21 15:41 \\x1b[01;34metcbackup\\x1b[0m/',\n",
       " '-rw-rw-r--  1 salvor salvor         0 Sep  2 15:31 fileslist',\n",
       " 'drwxrwxr-x  5 salvor salvor      4096 Mar 29 13:52 \\x1b[01;34mhtml\\x1b[0m/',\n",
       " '',\n",
       " '==> filestest <==',\n",
       " 'testfolder:',\n",
       " 'total 4',\n",
       " 'drwxrwxr-x 2 salvor salvor 4096 Sep  2 15:41 \\x1b[0m\\x1b[01;34mtestfolder3\\x1b[0m/',\n",
       " '',\n",
       " 'testfolder/testfolder3:',\n",
       " 'total 0',\n",
       " '',\n",
       " 'testfolder2:',\n",
       " 'total 0']"
      ]
     },
     "execution_count": 37,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# now we show the first 10 lines of file:filestest & file:fileslist\n",
    "!!head files*"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# Inma\n",
    "!!head files*"
   ]
  }
 ],
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