quizzes/posix-shell.json

   1 {
   2         "version": "0.1",
   3         "copyright": [
   4                 "Copyright (C) 2013 W. Trevor King <wking@tremily.us>",
   5                 "",
   6                 "This file is part of quizzer.",
   7                 "",
   8                 "quizzer is free software: you can redistribute it and/or modify it under the",
   9                 "terms of the GNU General Public License as published by the Free Software",
  10                 "Foundation, either version 3 of the License, or (at your option) any later",
  11                 "version.",
  12                 "",
  13                 "quizzer is distributed in the hope that it will be useful, but WITHOUT ANY",
  14                 "WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR",
  15                 "A PARTICULAR PURPOSE.  See the GNU General Public License for more details.",
  16                 "",
  17                 "You should have received a copy of the GNU General Public License along with",
  18                 "quizzer.  If not, see <http://www.gnu.org/licenses/>."
  19                 ],
  20         "introduction": "Test your knowledge of the POSIX shell.",
  21         "questions": [
  22                 {
  23                         "class": "ScriptQuestion",
  24                         "interpreter": "sh",
  25                         "id": "quoting spaces",
  26                         "prompt": "Call `ls` and pass it two arguments: `a` and `b c`.",
  27                         "answer": "ls a 'b c'",
  28                         "compare_answers": true,
  29                         "help": "http://pubs.opengroup.org/onlinepubs/009696699/utilities/xcu_chap02.html#tag_02_02"
  30                 },
  31                 {
  32                         "class": "ScriptQuestion",
  33                         "interpreter": "sh",
  34                         "id": "echo constant",
  35                         "prompt": "Print the string `hello, world` to stdout.",
  36                         "answer": "echo 'hello, world'",
  37                         "compare_answers": true,
  38                         "help": "http://pubs.opengroup.org/onlinepubs/009696699/utilities/echo.html"
  39                 },
  40                 {
  41                         "class": "ScriptQuestion",
  42                         "interpreter": "sh",
  43                         "id": "parameter expansion",
  44                         "prompt": "Print the contents of the PATH variable to stdout.",
  45                         "answer": "echo \"$PATH\"",
  46                         "compare_answers": true,
  47                         "help": "http://pubs.opengroup.org/onlinepubs/009696699/utilities/xcu_chap02.html#tag_02_06_02",
  48                         "dependencies": [
  49                                 "echo constant"
  50                                 ]
  51                 },
  52                 {
  53                         "class": "ScriptQuestion",
  54                         "interpreter": "sh",
  55                         "id": "variable assign constant",
  56                         "prompt": "Set the ABC variable to the string `xyz`.",
  57                         "answer": "ABC='xyz'",
  58                         "post_answer": [
  59                                 "echo \"ABC: '${ABC}'\""
  60                                 ],
  61                         "compare_answers": true,
  62                         "help": "http://tldp.org/LDP/abs/html/varassignment.html"
  63                 },
  64                 {
  65                         "class": "ScriptQuestion",
  66                         "interpreter": "sh",
  67                         "id": "variable assign altered",
  68                         "prompt": "Prepend the string `/some/path:` to the PATH variable.",
  69                         "answer": "PATH=\"/some/path:$PATH\"",
  70                         "post_answer": [
  71                                 "echo \"PATH: '${PATH}'\""
  72                                 ],
  73                         "compare_answers": true,
  74                         "help": [
  75                                 "http://pubs.opengroup.org/onlinepubs/009696699/utilities/xcu_chap02.html#tag_02_06_02",
  76                                 "http://tldp.org/LDP/abs/html/varassignment.html"
  77                                 ],
  78                         "dependencies": [
  79                                 "parameter expansion",
  80                                 "variable assign constant"
  81                                 ]
  82                 }
  83         ]
  84 }