Amazon S3 download with Curl

gistfile1.txt

#!/bin/sh 
file=path/to/file 
bucket=your-bucket 
resource="/${bucket}/${file}" 
contentType="application/x-compressed-tar" 
dateValue="`date +'%a, %d %b %Y %H:%M:%S %z'`" 
stringToSign="GET 
${contentType} 
${dateValue} 
${resource}" 
s3Key=xxxxxxxxxxxxxxxxxxxx 
s3Secret=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 
signature=`/bin/echo -en "$stringToSign" | openssl sha1 -hmac ${s3Secret} -binary | base64`
curl -H "Host: ${bucket}.s3.amazonaws.com" \
-H "Date: ${dateValue}" \
-H "Content-Type: ${contentType}" \ 
-H "Authorization: AWS ${s3Key}:${signature}" \ 
https://${bucket}.s3.amazonaws.com/${file}

This doesn't work. You have spaces on the end of every line that need to be deleted. And you need a 2nd newline after line 7, after the GET.

@dashxdr is right stringToSign should be

stringToSign="GET\n\n${contentType}\n${dateValue}\n${resource}"

Thanks for the script and the helpful comments - worked like a charm! 👍

bucket path style.
use "/bin/echo" wrong in my shell.

#!/bin/bash
file=$1
dateValue=$(date -R -u +'%a, %d %b %Y %H:%M:%S %z')
stringToSign="GET\n\n\n${dateValue}\n${file}"
signature=$(echo -en "${stringToSign}" | openssl sha1 -hmac "${S3_SECRET_KEY}" -binary | base64)
curl "https://${S3_HOST}${file}" "${@:2}"
-X GET
-H "Host: ${S3_HOST}"
-H "Date: ${dateValue}"
-H "Authorization: AWS ${S3_ACCESS_KEY}:${signature}"