This bash script searches for image files in a specified directory, enhances and converts them to JPEG format, and renames them by removing "-final" extensions and appending ".jpg" extensions. The script uses commands like find, convert, and mv to perform these operations, relying on ImageMagick and parameter expansion for file manipulation.

Cell 4

find /Users/briancullinan/.q3a/unpacked/baseq3vm -iname '*.jpeg' -o -iname '*.jpg' -o -iname '*.heic' -o -iname '*.tga' -o -iname '*.png' -o -iname '*.svg' -o -name '*.webp' -o -name '*.wal' | \
while IFS= read -r i; do \
o="${i%.*}"; \
o="${o%-final*}-final.jpg"; \
if [ ! -f "$o" ]; then \
    convert "$i" +clone -enhance -despeckle -alpha on -channel alpha -evaluate multiply 0.25 -composite -quality 50% "$o" || true; \
    rm "$i"; \
    mv "$o" "${i%.*}.jpg"; \
else \
    mv "$o" "${i%.*}.jpg"; \
fi; \
done;

#!/bin/bash

IMAGE_FORMATS=(jpeg jpg heic tga png svg webp wal)

# Define the directory to search for images
IMAGE_DIR="/Users/briancullinan/.q3a/unpacked/baseq3vm"

# Loop through each image format and find matching files
while IFS= read -r image; do
  # Extract the file name without extension
  filename="${image%.*}"

  # Determine the output file name
  output_filename="${filename%-final*}-final.jpg"

  # Check if the output file already exists
  if [! -f "$output_filename" ]; then
    # Enhance the image using ImageMagick
    convert "$image" +clone -enhance -despeckle -alpha on -channel alpha -evaluate multiply 0.25 -composite -quality 50% "$output_filename" || true
    
    # Delete the original image
    rm "$image"
    
    # Rename the output file to the original name with a.jpg extension
    mv "$output_filename" "${image%.*}.jpg"
  else
    # If the output file already exists, rename it to the original name with a.jpg extension
    mv "$output_filename" "${image%.*}.jpg"
  fi
done < <(find "$IMAGE_DIR" -iname "${IMAGE_FORMATS[*]/%/.}" | sort)

Code Breakdown

Purpose

The code is a bash script designed to:

1. Find image files of various formats in a specified directory.
2. Enhance and convert these images to JPEG format.
3. Rename the images by removing any "-final" suffix and appending a ".jpg" extension.

Code Structure

1. find: The find command is used to search for files in the specified directory /Users/briancullinan/.q3a/unpacked/baseq3vm.
2. pipes: The find command's output is piped to a while loop using the read command.
3. Loop Body: Inside the loop, the following operations are performed:
   • Extract the file name without extension using parameter expansion ${i%.*} and store it in variable o.
   • Append a "-final.jpg" extension to the variable o.
   • Check if the file with the new name exists using [! -f "$o" ]. If it does not exist:
     • Use the convert command from ImageMagick to enhance and convert the image to JPEG format.
     • Remove the original file.
     • Move the converted file to the original file's directory with a ".jpg" extension.
   • If the file with the new name already exists, simply move it to the original file's directory with a ".jpg" extension.

Dependencies

• find command
• ImageMagick package with convert command

Notes

• The || true part in the convert command is used to ignore any errors that may occur during the conversion process.
• The rm command is used to delete the original file after conversion.
• The mv command is used to move the converted file to the original file's directory with a ".jpg" extension.
• The code uses parameter expansion and arithmetic expansion to manipulate file names and extensions.