{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Operating system calls\n",
    "\n",
    "It's possible to use python to perform command line calls\n",
    "\n",
    "We can do this with the os module"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import os"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## name of operating system\n",
    "\n",
    "We can get the operating system we're working on\n",
    "\n",
    "1. nt is windows\n",
    "2. posix is all unix based systems (Mac, Linux, ...)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(os.name)\n",
    "\n",
    "my_os = os.name"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## working directory"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "os.getcwd()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(os.getcwd())"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## contents of directory"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "os.listdir('.')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "os.listdir('C:\\\\Users\\\\Dan\\\\Google Drive\\\\python course')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## make and rename directory"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "os.mkdir('C:\\\\Users\\\\Dan\\\\Google Drive\\\\python course\\\\new_dir')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "os.rename('C:\\\\Users\\\\Dan\\\\Google Drive\\\\python course\\\\new_dir','C:\\\\Users\\\\Dan\\\\Google Drive\\\\python course\\\\new_dir2')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## create and edit file"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "file = open('C:\\\\Users\\\\Dan\\\\Google Drive\\\\python course\\\\new_dir2\\\\myTXTfile.txt','w')\n",
    "file.write('hello\\n')\n",
    "file.write('world!')\n",
    "file.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.7.3"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}