#set text(font: "FreeSans")
#set page(margin: 1cm)

#show link: item => [
  #text(blue)[#item]
]

#show raw: set text(font: "Fira Code")
#show raw.where(block: true): item => {
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      fill: luma(97%),
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    )[#item]]
}


#let comment(com) = {
  text(size: 0.85em, style: "italic", fill: rgb(64, 90, 95))[#com]
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#let answer(ans) = {
  align(center)[#block(
      inset: 4pt,
      stroke: blue + .5pt,
      fill: rgb(0, 149, 255, 5%),
      radius: 3pt,
    )[#ans]]
}

#align(center)[#text(size: 1.3em)[= CS 3424 Quiz - Week 4]]
#align(center)[
  #("Price Hiller", "zfp106", "Quiz 3", "CS 3424").join(" ⋄ ")
  #v(-.5em)
  #text(size: 0.75em)[#block(
      inset: 4pt,
      radius: 1pt,
      stroke: luma(40%) + .2pt,
      width: 40%,
      fill: luma(97%),
    )[#par(leading: .4em)[If you are interested in viewing the source code of this document, you can do so
        by clicking
        #link(
          "https://git.orion-technologies.io/Price/college/src/branch/Development/Summer-2024/CS-3424/Quizzes/Quiz-3/Assignment.typ",
          "here.",
        )]]]
  #v(-.5em)
  #line(length: 100%, stroke: (dash: "densely-dotted"))
  #v(-.5em)
]

1. Use the appropriate utility to print all lines from files in the current
  directory _and subdirectories_ containing the string "main".
  #answer[
    #comment[
      Necessarily only works with files that the current user has access to.

      Technically the `./` path is unnecessary as `grep` by default will do the
      recursive search from the current directory (as stored in `$PWD`), but
      being explicit is generally better as a rule of thumb.
    ]
    ```bash
    grep -r "main" ./
    ```
  ]
2. Use the appropriate utility to list all directories and subdirectories (not
  files) belonging to the user [you are the user]
  #answer[
    #comment[
      I know for a fact that pretty much all Linux systems since the dawn of
      time will export the `$UID` variable for use, but the `$USER` variable may
      not be set depending on the system/kernel version. For _extreme_ backwards
      compatibility it's better to prefer `$UID` over `$USER` (but in a practical
      sense is more pedantic than "good practice", it doesn't matter that much).

      I also redirect `STDERR` to `/dev/null` so we don't see any "Permission
      denied..." output.
    ]
    ```bash
    find ./ -type d -user "$UID" 2>/dev/null
    ```
  ]