Create the world's lamest AppImage

make-lame-appimage.sh

#!/bin/bash

set -e

if [[ -z "$1" ]]; then
    echo "Usage: $0 <binary> [additional files...]"
    exit 1
fi

BIN_PATH=$(realpath "$1")
BIN_NAME=$(basename "$BIN_PATH")
TMPDIR=$(mktemp -d)
OUTFILE="$BIN_NAME.run"

echo "Packaging $BIN_NAME into $OUTFILE..."

# Create the runtime directory
mkdir -p "$TMPDIR/app/bin"
cp "$BIN_PATH" "$TMPDIR/app/bin/"

# Copy additional files if provided
shift  # Remove the binary path from arguments
for file in "$@"; do
    if [[ -e "$file" ]]; then
        echo "Including additional file: $file"
        cp -a "$file" "$TMPDIR/app/"
    else
        echo "Warning: File not found: $file"
    fi
done

# Find all required shared libraries
echo "Finding shared libraries..."
ldd "$BIN_PATH" | awk '{print $3}' | grep -E '^/' | sort -u | while read -r lib; do
    cp "$lib" "$TMPDIR/app/"
done

# Create self-extracting script
{
    echo "#!/bin/bash"
    echo "TMPDIR=\$(mktemp -d)"
    echo "echo Extracting to \$TMPDIR..."
    echo "ARCHIVE_LINE=\$(awk '/^__ARCHIVE__/{print NR + 1; exit 0}' \"\$0\")"
    echo "tail -n +\$ARCHIVE_LINE \"\$0\" | tar xf - -C \"\$TMPDIR\""
    echo "cd \"\$TMPDIR/app\""
    echo "export LD_LIBRARY_PATH=\"\$TMPDIR/app\""
    echo "exec \"./bin/$BIN_NAME\" \"\$@\""
    echo "__ARCHIVE__"
    tar cf - -C "$TMPDIR" app  # <-- NO COMPRESSION
} > "$OUTFILE"

chmod +x "$OUTFILE"
rm -rf "$TMPDIR"

echo "Created $OUTFILE. You can run it anywhere!"