Fulfilling a reader's request for my “dot files”(rachelbythebay.com)

    alias ls='ls --color=auto -F -b -T 0 -A'

    -F classify entries with (*/=>@|)
    -b use c-style escapes instead of quoting
    -T 0 do not use tabs for alignment
    -A show all dotfiles except . and ..

    alias ip='ip --color=auto'

    alias l='command ls -Av1h --color=always --time-style=long-iso --group-directories-first'

    # -A: show all, including dotfiles, except . and ..
    # -v: natural sort of number
    # -1 (one): list (use -l for long version)
    # -h: human-readable sizes

    alias rm='command rm -Iv'

    # -I: prompt once before removing more than three files or recursively
    # -v: verbose

    HISTFILE="${XDG_RUNTIME_DIR:-/tmp}/shell-history-$$"

    '\u@\h:\w$ '

    bash-5.2$ cat .nanorc
    set zero

    UXTerm.vt100.translations: #override \n\
        Ctrl Shift <Key>N: scroll-back(1, halfpage) \n\
        Ctrl Shift <Key>T: scroll-forw(1, halfpage) \n\
        Ctrl Shift <Key>C: copy-selection(CLIPBOARD) \n\
        Ctrl Shift <Key>V: insert-selection(CLIPBOARD) \n\
        Ctrl Shift <Key>H: set-altscreen(toggle)

    export QUOTING_STYLE=literal

  # Changes the current working directory to the running script.
  cd_running_script_dir() {
      cd "$(dirname "$(readlink -f "$0")")"
  }

  # Display an error message and abort the running script.
  #
  # Arguments:
  #   $1: A string with error to be displayed before aborting.
  abort() {
      ERROR=$1

      >&2 echo "${ERROR}"
      kill $$
  }

  # Return a program's full path if exists or display an error
  # message and abort script execution.
  #
  # Arguments:
  #   $1: A string with the program's name to be looked up.
  get_program() {
      PROGRAM_NAME=$1
      PROGRAM_PATH=$(which "${PROGRAM_NAME}")

      if [ -z "${PROGRAM_PATH}" ]; then
          abort "Error - ${PROGRAM_NAME} is not installed."
      fi

      echo "${PROGRAM_PATH}"

      unset PROGRAM_PATH
      unset PROGRAM_NAME
  }

  "${HOME}/.scripts/set-random-background" &

  #!/usr/bin/env sh

  # Randomly sets a wallpaper from a directory containing images.
  #
  # Usage:
  #   ./set-random-background

  # Adjust global settings accordingly.
  WALLPAPERS_PATH="${HOME}/.scripts/assets/wallpapers"

  set_random_background() {
      FEH=$(get_program "feh")

      if [ -d "${WALLPAPERS_PATH}" ]; then
          WALLPAPER=$(ls "${WALLPAPERS_PATH}"/* | sort --random-sort | head -n1)

          if [ -n "${WALLPAPER}" ]; then
              ${FEH} --no-fehbg --bg-center --bg-scale "${WALLPAPER}"
          fi
      fi
  }

  main() {
      if [ -n "${BASH_LIB}" ]; then
          . "${BASH_LIB}"

          set_random_background
      fi
  }

  main