Archive Benchmark Scripts: Optimize Compression Efficiency

#!/bin/bash

# Define the source directory and file extensions
source_dir="$HOME/pictures"
extensions=(
  "zip"
  "zipx"
  "cbz"
  "tar"
  "tar.gz"
  "tar.bz2"
  "tar.xz"
  "tar.lzma"
  "tar.lz"
  "tgz"
  "tbz"
  "tbz2"
  "zst"
  "rar"
  "7z"
  "xz"
  "bz2"
  "gz"
  "z"
  "lz4"
  "lzma"
)

# Loop through each extension and create a compressed file
for ext in "${extensions[@]}"; do
  output_file="pictures.$ext"
  case "$ext" in
    "zip" | "zipx" | "cbz")
      zip -r "$output_file" "$source_dir"
      ;;
    "tar" | "tar.gz" | "tar.bz2" | "tar.xz" | "tar.lzma" | "tar.lz" | "tgz" | "tbz" | "tbz2" | "zst")
      tar -cf "$output_file" -C "$source_dir" .
      ;;
    "rar")
      rar a "$output_file" "$source_dir"
      ;;
    "7z")
      7z a "$output_file" "$source_dir"
      ;;
    "xz")
      xz "$source_dir" -c > "$output_file"
      ;;
    "bz2")
      tar -cjf "$output_file" -C "$source_dir" .
      ;;
    "gz")
      tar -czf "$output_file" -C "$source_dir" .
      ;;
    "z")
      tar -c "$source_dir" | gzip -n - > "$output_file"
      ;;
    "lz4")
      tar -c "$source_dir" | lz4 -9 - > "$output_file"
      ;;
    "lzma")
      tar -c "$source_dir" | lzma -9 - > "$output_file"
      ;;
    *)
      echo "Unsupported extension: $ext"
      ;;
  esac
done

#!/bin/bash

# Define the source directory
source_dir="$HOME/pictures"

# Create a function to create archives with maximum compression
create_archive() {
  local ext="$1"
  local output_file="pictures.$ext"
  case "$ext" in
    "zip" | "zipx" | "cbz")
      zip -r9 "$output_file" "$source_dir"
      ;;
    "tar" | "tar.gz" | "tar.bz2" | "tar.xz" | "tar.lzma" | "tar.lz" | "tgz" | "tbz" | "tbz2" | "zst")
      tar --use-compress-program=pigz -cf "$output_file" -C "$source_dir" .
      ;;
    "rar")
      rar a -m5 "$output_file" "$source_dir"
      ;;
    "7z")
      7z a -mx9 "$output_file" "$source_dir"
      ;;
    "xz")
      xz -9e "$source_dir" -c > "$output_file"
      ;;
    "bz2")
      tar --use-compress-program=pbzip2 -cf "$output_file" -C "$source_dir" .
      ;;
    "gz")
      tar --use-compress-program=pigz -czf "$output_file" -C "$source_dir" .
      ;;
    "z")
      tar -c "$source_dir" | zstd -19 -T0 -o "$output_file"
      ;;
    "lz4")
      tar -c "$source_dir" | lz4 -9 - > "$output_file"
      ;;
    "lzma")
      tar -c "$source_dir" | lzma -9 - > "$output_file"
      ;;
    *)
      echo "Unsupported extension: $ext"
      ;;
  esac
}

# Loop through each extension and create a compressed file
for ext in "${extensions[@]}"; do
  create_archive "$ext"
done

#!/bin/bash

source_dir="$HOME/pictures"
num_jobs=$(($(nproc) + 1))

compress_file() {
  local file="$1"
  local ext="$2"
  local output_file="${file%.*}.$ext"
  case "$ext" in
    "gz")
      gzip -c "$file" > "$output_file"
      ;;
    "bz2")
      bzip2 -c "$file" > "$output_file"
      ;;
    "xz")
      xz -c "$file" > "$output_file"
      ;;
    "zst")
      zstd -c "$file" > "$output_file"
      ;;
    "lz4")
      lz4 -9 -k "$file" "$output_file"
      ;;
    "lzma")
      lzma -9 -k "$file" "$output_file"
      ;;
    "rar")
      rar a -m5 "$output_file" "$file"
      ;;
    "7z")
      7z a -mx9 "$output_file" "$file"
      ;;
    "zip")
      zip -r9 "$output_file" "$file"
      ;;
    "zipx")
      zip -r9 "$output_file" "$file"
      ;;
    "cbz")
      zip -r9 "$output_file" "$file"
      ;;
    # Add other cases as needed
    *)
      echo "Unsupported extension: $ext"
      ;;
  esac
}

export -f compress_file
export source_dir

extensions=("gz" "bz2" "xz" "zst" "lz4" "lzma" "rar" "7z" "zip" "zipx" "cbz" /* other extensions */)
for ext in "${extensions[@]}"; do
  find "$source_dir" -type f -print0 | xargs -0 -n 1 -P "$num_jobs" -I {} bash -c 'compress_file "$@"' _ {} "$ext"
done