The purpose of this blog

The purpose of this blog is to post fixes for common linux or unix command line problems including the command line on Mac OS X.

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Automatically Fix Song Metadata and Filenames on Linux with Beets

 🎵 Automatically Fix Song Metadata and Filenames on Linux with Beets Tired of sorting through unknown MP3s with cryptic filenames like Track01.mp3? Sick of missing album info, incorrect genres, and zero cover art? Here's a clean way to batch-fix your music collection with open source tools — no manual editing required. ✅ What You’ll Use beets — the core tool that organizes, renames, and tags your music by matching against the MusicBrainz database. libchromaprint-tools — provides fpcalc, which generates audio fingerprints to identify unlabeled tracks. ffmpeg (optional) — used by beets for transcoding or embedded cover art processing. 🔧 Installation sudo apt update sudo apt install beets libchromaprint-tools ffmpeg 🚀 One Command to Organize It All beet import /path/to/your/music/ Beets will: Fingerprint each file Query MusicBrainz for metadata Rename files (e.g., Artist - Title.mp3) Write correct ID3/metadata tag Optionally move files into organized folders 📁 Example Output Your ...
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A script to turn unencrypted epub files into plain text, bash

 #!/bin/bash # Check if a directory is provided if [ "$#" -ne 1 ]; then     echo "Usage: $0 <path-to-directory>"     exit 1 fi DIRECTORY="$1" # Check if the provided argument is a directory if [ ! -d "$DIRECTORY" ]; then     echo "The specified path is not a directory."     exit 1 fi # Process each EPUB file in the directory find "$DIRECTORY" -type f -name "*.epub" | while IFS= read -r EPUB_FILE; do     # Extract the base name without the extension     BASE_NAME=$(basename "$EPUB_FILE" .epub)     TEXT_FILE="$DIRECTORY/${BASE_NAME}.txt"     echo "Processing $EPUB_FILE"          # Create a temporary directory to extract the EPUB file     TEMP_DIR=$(mktemp -d)     echo "Extracting EPUB file to $TEMP_DIR"          # Unzip the EPUB file into the temporary directory     unzip -q "$EPUB_FILE" -d "$TEMP_DIR"    ...
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recover a usb flash drive

  Recovering Data from a Corrupted Flash Disk on Linux 🔧 Step 1: Install the Recovery Tools Install GNU ddrescue and testdisk (which includes photorec): sudo apt-get install gddrescue testdisk 💽 Step 2: Make a Full Disk Image with ddrescue Do NOT work on the damaged flash drive directly. Instead, make a safe copy: sudo ddrescue -n /dev/sdX rescued.img rescued.log Replace /dev/sdX with your actual USB device (e.g. /dev/sdb). Use lsblk to check. This may take a while — especially if the disk has errors. 🧠 Step 3: Mount the Image (If Possible) Try mounting the recovered image: mkdir /mnt/recovered sudo mount -o loop rescued.img /mnt/recovered If that fails with a superblock error, try: sudo mount -t vfat -o loop rescued.img /mnt/recovered Still not working? The partition table might be corrupted. 🔍 Step 4: Inspect the Partition Table Run: fdisk -l rescued.img If you see absurd sizes (e.g. hundreds of GB on an 8GB drive), your partition table is toast. 🧰 Step 5: Recover Files...
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