40 lines
1.2 KiB
Bash
Executable File
40 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: MPL-2.0
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# Ensure the script is invoked with the necessary arguments
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if [ "$#" -lt 2 ]; then
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echo "Atomic File Download with wget."
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echo "This script downloads a file from a specified URL using wget. \
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The downloaded file will appear locally as a complete file or not appear at all in case of an error."
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echo ""
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echo "Usage: $0 <output_file> <url> [wget_options]"
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echo ""
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echo "Arguments:"
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echo " <output_file> Name of the file to save the downloaded content."
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echo " <url> URL of the file to be downloaded."
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echo " [wget_options] Optional: Additional wget options for customized download behavior."
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exit 1
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fi
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OUTPUT_FILE="$1"
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URL="$2"
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WGET_OPTIONS="${3:-}"
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TEMP_FILE="/tmp/$(basename "$OUTPUT_FILE")"
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# Download the file using wget
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if ! wget $WGET_OPTIONS -c -O "$TEMP_FILE" "$URL"; then
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echo "Error: Failed to download $URL." >&2
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rm -f "$TEMP_FILE"
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exit 1
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fi
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# Move the temporary file to the target location
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if ! mv "$TEMP_FILE" "$OUTPUT_FILE"; then
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echo "Error: Failed to move $TEMP_FILE to $OUTPUT_FILE." >&2
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rm -f "$TEMP_FILE"
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exit 1
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fi
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echo "File downloaded successfully to $OUTPUT_FILE."
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