Uploading files to s3 using s3cmd in parallel

问题

I've got a whole heap of files on a server, and I want to upload these onto S3. The files are stored with a .data extension, but really they're just a bunch of jpegs,pngs,zips or pdfs.

I've already written a short script which finds the mime type and uploads them onto S3 and that works but it's slow. Is there any way to make the below run using gnu parallel?

#!/bin/bash

for n in $(find -name "*.data") 
do 
        data=".data" 
        extension=`file $n | cut -d ' ' -f2 | awk '{print tolower($0)}'` 
        mimetype=`file --mime-type $n | cut -d ' ' -f2`
        fullpath=`readlink -f $n`

        changed="${fullpath/.data/.$extension}"

        filePathWithExtensionChanged=${changed#*internal_data}

        s3upload="s3cmd put -m $mimetype --acl-public $fullpath s3://tff-xenforo-data"$filePathWithExtensionChanged     

        response=`$s3upload`
        echo $response 

done

Also I'm sure this code could be greatly improved in general :) Feedback tips would be greatly appreciated.

回答1:

You are clearly skilled in writing shell, and extremely close to a solution:

s3upload_single() {
    n=$1
    data=".data" 
    extension=`file $n | cut -d ' ' -f2 | awk '{print tolower($0)}'` 
    mimetype=`file --mime-type $n | cut -d ' ' -f2`
    fullpath=`readlink -f $n`

    changed="${fullpath/.data/.$extension}"

    filePathWithExtensionChanged=${changed#*internal_data}

    s3upload="s3cmd put -m $mimetype --acl-public $fullpath s3://tff-xenforo-data"$filePathWithExtensionChanged     

    response=`$s3upload`
    echo $response 
}
export -f s3upload_single
find -name "*.data" | parallel s3upload_single

回答2:

you can just use s3cmd-modified which allows you to put/get/sync with multiple workers in parallel

$ git clone https://github.com/pcorliss/s3cmd-modification.git $ cd s3cmd-modification $ python setup.py install $ s3cmd --parallel --workers=4 sync /source/path s3://target/path

回答3:

Try s3-cli: Command line utility frontend to node-s3-client. Inspired by s3cmd and attempts to be a drop-in replacement.

Paraphrasing from https://erikzaadi.com/2015/04/27/s3cmd-is-dead-long-live-s3-cli/ :

This is a inplace replace to s3cmd, written in node (yaay!), which works flawlessly with the existing s3cmd configuration, which (amongs other awsome stuff), uploads to S3 in parallel, saving LOADS of time.
-        system "s3cmd sync --delete-removed . s3://yourbucket.com/"
+        system "s3-cli sync --delete-removed . s3://yourbucket.com/"