Check files recursively

check_final_newline.sh

#!/bin/bash

# List final newline of all text files in a directory recursively.

readonly END=
readonly BOLD=
readonly RED=
readonly GREEN=
readonly YELLOW=

if [[ "$1" == "-h" ]] || [[ "$1" == "--help" ]]; then
  echo "Usage: ${GREEN}check_final_newline.sh$END $YELLOW<directory>$END"
  exit 0
fi

find "$1" -type d | while read dir; do
  found="false"
  echo
  echo "$BOLD$dir:$END"
  for file in "$dir/"*; do
    if [[ -d "$file" ]]; then
      continue
    fi
    found="true"
    filename="$(basename -- "$file")" # remove path
    if [[ "$(tail -c 1 "$file")" == "" ]]; then
      status=${GREEN}Yes$END
    else
      status=${RED}No$END
    fi
    echo "- $filename: $status"
  done
  if [[ "$found" = false ]]; then
    echo "${RED}Not found.$END"
  fi
done
echo
echo "Goodbye!"

check_png_bits.sh

#!/bin/bash

# List bits per channel of all PNG files in a directory recursively.

readonly END=
readonly BOLD=
readonly RED=
readonly GREEN=
readonly YELLOW=

if [[ "$1" == "-h" ]] || [[ "$1" == "--help" ]]; then
  echo "Usage: ${GREEN}check_png_bits.sh$END $YELLOW<directory>$END"
  exit 0
fi

if ! command -v pngcheck &> /dev/null; then
  echo "${RED}pngcheck is not installed.$END"
  exit 1
fi

find "$1" -type d | while read dir; do
  found="false"
  echo
  echo "$BOLD$dir:$END"
  for file in "$dir/"*; do
    if [[ "$file" =~ \.png$ ]]; then
      found="true"
      filename="$(basename -- "$file")" # remove path
      filename="${filename%.*}" # remove extension
      status="$(pngcheck "$file")"
      status="$(echo "$status" | sed -E "s/-bit.*//")" # substring before last `-bit`
      status="$(echo "$status" | rev | cut -d " " -f 1 | rev)" # substring after last ` `
      echo "- $filename: $GREEN$status-bit$END"
    fi
  done
  if [[ "$found" = false ]]; then
    echo "${RED}Not found.$END"
  fi
done
echo
echo "Goodbye!"