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install script improvements #785

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install script improvements #785

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48 changes: 48 additions & 0 deletions scripts/install.sh
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Original file line number Diff line number Diff line change
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#!/bin/sh

# Function to check for required commands
check_command() {
command -v "$1" >/dev/null 2>&1 || { echo >&2 "Error: $1 is required but not installed."; exit 1; }
}

# Check for required commands
check_command curl
check_command wget
check_command sha256sum || check_command sha1sum

# Set checksum command based on availability
CHECKSUM_CMD=sha256sum
if ! command -v $CHECKSUM_CMD >/dev/null 2>&1; then
CHECKSUM_CMD=sha1sum
fi

# Function to download and verify a file
download_and_verify() {
URL=$1
EXPECTED_CHECKSUM=$2
TEMP_FILE=$(mktemp)

# Download the file
if command -v curl >/dev/null 2>&1; then
curl -L -o "$TEMP_FILE" "$URL"
else
wget -O "$TEMP_FILE" "$URL"
fi

# Verify the checksum
if [ "$($CHECKSUM_CMD "$TEMP_FILE" | awk '{print $1}')" != "$EXPECTED_CHECKSUM" ]; then
echo "Checksum verification failed!"
rm -f "$TEMP_FILE"
exit 1
fi

echo "Download and verification successful!"
# Continue with installation...
}

# Example usage
download_and_verify "https://example.com/file" "expectedchecksumvalue"

# Cleanup
rm -f "$TEMP_FILE"
echo "Installation completed successfully!"
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