quizzes/posix-shell.json

   1 {
   2         "version": "0.1",
   3         "introduction": "Test your knowledge of the POSIX shell.",
   4         "questions": [
   5                 {
   6                         "class": "ScriptQuestion",
   7                         "interpreter": "sh",
   8                         "id": "quoting spaces",
   9                         "prompt": "Call `ls` and pass it two arguments: `a` and `b c`.",
  10                         "answer": "ls a 'b c'",
  11                         "help": "http://pubs.opengroup.org/onlinepubs/009696699/utilities/xcu_chap02.html#tag_02_02"
  12                 },
  13                 {
  14                         "class": "ScriptQuestion",
  15                         "interpreter": "sh",
  16                         "id": "echo constant",
  17                         "prompt": "Print the string `hello, world` to stdout.",
  18                         "answer": "echo 'hello, world'",
  19                         "help": "http://pubs.opengroup.org/onlinepubs/009696699/utilities/echo.html"
  20                 },
  21                 {
  22                         "class": "ScriptQuestion",
  23                         "interpreter": "sh",
  24                         "id": "parameter expansion",
  25                         "prompt": "Print the contents of the PATH variable to stdout.",
  26                         "answer": "echo \"$PATH\"",
  27                         "help": "http://pubs.opengroup.org/onlinepubs/009696699/utilities/xcu_chap02.html#tag_02_06_02",
  28                         "dependencies": [
  29                                 "echo constant"
  30                                 ]
  31                 },
  32                 {
  33                         "class": "ScriptQuestion",
  34                         "interpreter": "sh",
  35                         "id": "variable assign constant",
  36                         "prompt": "Set the ABC variable to the string `xyz`.",
  37                         "answer": "ABC='xyz'",
  38                         "teardown": [
  39                                 "echo \"ABC: '${ABC}'\""
  40                                 ],
  41                         "help": "http://tldp.org/LDP/abs/html/varassignment.html"
  42                 },
  43                 {
  44                         "class": "ScriptQuestion",
  45                         "interpreter": "sh",
  46                         "prompt": "Prepend the string `/some/path:` to the PATH variable.",
  47                         "answer": "PATH=\"/some/path:$PATH\"",
  48                         "teardown": [
  49                                 "echo \"PATH: '${PATH}'\""
  50                                 ],
  51                         "help": "",
  52                         "dependencies": [
  53                                 "variable assign constant"
  54                                 ]
  55                 }
  56         ]
  57 }