Update examples/eg010SendBinaryDocs.sh

Author: LarryKlugerDS

examples/eg010SendBinaryDocs.sh

@@ -88,9 +88,10 @@ json='
 # Step 2. Assemble the multipart body
 CRLF="\r\n"
 boundary="multipartboundary_multipartboundary"
-hyphens="--" 
+# it is not easy to printf hyphens. See https://unix.stackexchange.com/q/22764/149244
+hyphens_cmd='printf "--" --' 
 
-printf "${hyphens}" > $request_data
+eval hyphens_cmd > $request_data
 printf "${boundary}" >> $request_data
 printf "${CRLF}Content-Type: application/json" >> $request_data
 printf "${CRLF}Content-Disposition: form-data" >> $request_data
@@ -100,29 +101,39 @@ printf "${CRLF}${json}" >> $request_data
 # Next add the documents. Each document has its own mime type,
 # filename, and documentId. The filename and documentId must match
 # the document's info in the JSON.
-printf "${CRLF}${hyphens}${boundary}"    >> $request_data
+printf "${CRLF}"     >> $request_data
+eval hyphens_cmd     >> $request_data
+printf "${boundary}" >> $request_data
 printf "${CRLF}Content-Type: text/html"  >> $request_data
 printf "${CRLF}Content-Disposition: file; filename=\"Order acknowledgement\";documentid=1" >> $request_data
 printf "${CRLF}" >> $request_data
 printf "${CRLF}" >> $request_data
 cat "$doc1_path" >> $request_data
 
-printf "${CRLF}${hyphens}${boundary}"    >> $request_data
+printf "${CRLF}"     >> $request_data
+eval hyphens_cmd     >> $request_data
+printf "${boundary}" >> $request_data
 printf "${CRLF}Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document"  >> $request_data
 printf "${CRLF}Content-Disposition: file; filename=\"Battle Plan\";documentid=2" >> $request_data
 printf "${CRLF}" >> $request_data
 printf "${CRLF}" >> $request_data
 cat "$doc2_path" >> $request_data
 
-printf "${CRLF}${hyphens}${boundary}"    >> $request_data
+printf "${CRLF}"     >> $request_data
+eval hyphens_cmd     >> $request_data
+printf "${boundary}" >> $request_data
 printf "${CRLF}Content-Type: application/pdf"  >> $request_data
 printf "${CRLF}Content-Disposition: file; filename=\"Lorem Ipsum\";documentid=3" >> $request_data
 printf "${CRLF}" >> $request_data
 printf "${CRLF}" >> $request_data
 cat "$doc3_path" >> $request_data
 
 # Add closing boundary
-printf "${CRLF}${hyphens}${boundary}${hyphens}${CRLF} >> $request_data
+printf "${CRLF}"     >> $request_data
+eval hyphens_cmd     >> $request_data
+printf "${boundary}" >> $request_data
+eval hyphens_cmd     >> $request_data
+printf "${CRLF}"     >> $request_data
 
 curl --header "Authorization: Bearer {ACCESS_TOKEN}" \
      --header "Content-Type: multipart/form-data; boundary=${boundary}" \