unix - "head" command for aws s3 to view file contents -


on linux, use head/tail commands preview contents of file. helps in viewing part of file (to inspect format instance), rather open whole file.

in case of amazon s3, seems there ls, cp, mv etc. commands wanted know if possible view part of file without downloading entire file on local machine using cp/get.

you can specify byte range when retrieving data s3 first n bytes, last n bytes or in between. (this helpful since allows download files in parallel – just start multiple threads or processes, each of retrieves part of total file.)

i don't know of various cli tools support directly range retrieval want.

the aws cli tools ("aws s3 cp" precise) not allow range retrieval s3curl (http://aws.amazon.com/code/128) should trick.(so plain curl, e.g., using --range parameter have request signing on own.)


Comments

Post a Comment

Popular posts from this blog

php - Submit Form Data without Reloading page -

i know question has been asked , answered bunch of times life of me can not solution work on code. believe if redo code, work properly, , in retrospect time i've spent on issue should have redone code...but beyond deadline , have working prototype up... can advise how update multiple forms on single page without reloading page? horrible @ php , complete noob js/jquery/ajax @ best. html/php in single file , believe causing me problems/is largest obstacle @ getting ajax form processing work. basically, want users to: select teams multiple dropdowns in form group 1 (league champs) , on update update db newly selected team without reloadding page. edit team scores per match , on score submit/update, update db new scores. for each requirement there multiple forms (1 each leagues, 1 each per match) have set class on each form id. everything works via php, form submission reloads page each time submitted , not ideal. i have tried ajax code here http://scotch.io/tutoria
Read more

linux - Rails running on virtual machine in Windows -

the reason why want switch ubuntu people said gems works better on linux on windows. i don't want macbook pro rails development since love windows , cannot stand lack of apps mac. moreover, people saying ubuntu "better" mac: http://www.reddit.com/r/ubuntu/comments/1bgj1s/are_there_advantages_of_ubuntu_over_os_x_for/ does virtual box work enough doesn't have lag @ all? using i7-3517u cpu 8gb memory. need program in environment lag-free , not sluggish. or there alternatives recommend? i unsure permission settings or complicated stuffs regarding terminal. i'll using terminal develop. i'm still quite new here development in linux. please kind me >< thanks. @holyxiaoxin pretty sure should asking on superuser instead. nevertheless, suggest install ubuntu in partition instead of running virtual machine. here's guide https://help.ubuntu.com/community/windowsdualboot also, yes. developing in virtual machine accurate, @ end experiment w
Read more

php - $params->set Array between square bracket -

i'm using k2 in joomla 3.3. i'm trying set params (items ids ) module k2_content item.php file. result must between brackets, like: ["96","68"] my code is: $query = "select * #__k2_items extra_fields_search = '$myautor' , catid !=1 " ; $db->setquery($query); $losautores = $db->loadobjectlist(); $result = array(); foreach ($losautores $key => $value) { $result[] = '" '.$value->id.' "'; } $string_version = implode(',', $result); $autoresfinal = '['.$string_version.']'; if test using print, looks ok. passing var pramas, 1064 error. $params->set('items', $autoresfinal); to test tried $autoresfinal = ["96","68"]; and works fine. idea why doesn't work? thank you. if assign ["x","y"] assigning an array . here transforming array in st
Read more