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{"id":1824,"date":"2021-04-12T06:00:00","date_gmt":"2021-04-12T11:00:00","guid":{"rendered":"https:\/\/www.bigdatainrealworld.com\/?p=1824"},"modified":"2023-02-19T07:31:30","modified_gmt":"2023-02-19T13:31:30","slug":"how-to-see-the-first-few-lines-from-a-file-in-s3-using-aws-cli","status":"publish","type":"post","link":"https:\/\/www.bigdatainrealworld.com\/how-to-see-the-first-few-lines-from-a-file-in-s3-using-aws-cli\/","title":{"rendered":"How to see the first few lines from a file in S3 using AWS CLI?"},"content":{"rendered":"

This is a very common requirement and it has an easy solution.<\/span><\/p>\n

Solution<\/span><\/h2>\n

aws s3api get-object to get the object and use to –range option to fetch only the specified number of bytes.<\/span><\/p>\n

Since we are just previewing the content, instead of writing to a file we can send the output to standard output by specifying \/dev\/stdout and followed by a pipe to head<\/span><\/p>\n

[osboxes@wk1 ~]$ aws s3api get-object --bucket hirw-bucket-versions \n--key version-test --range bytes=0-1000 \/dev\/stdout | head\n\nHello, this is VERSION TWO\n\n{\n    \"AcceptRanges\": \"bytes\",\n    \"LastModified\": \"2020-11-18T19:40:35+00:00\",\n    \"ContentLength\": 27,\n    \"ETag\": \"\\\"04cf95a672923b5c021568765b336c4f\\\"\",\n    \"VersionId\": \"8LKeiP26.7WS_CUYUmY_BNmpIX0ljIxa\",\n    \"ContentRange\": \"bytes 0-26\/27\",\n    \"ContentType\": \"binary\/octet-stream\",\n    \"Metadata\": {}<\/pre>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

This is a very common requirement and it has an easy solution. Solution aws s3api get-object to get the object and use to –range option to [\u2026]<\/span><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-1824","post","type-post","status-publish","format-standard","hentry","category-s3"],"yoast_head":"\nHow to see the first few lines from a file in S3 using AWS CLI? - Big Data In Real World<\/title>\n<meta name=\"description\" content=\"Quick and easy solution to see first few lines from a file in S3.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bigdatainrealworld.com\/how-to-see-the-first-few-lines-from-a-file-in-s3-using-aws-cli\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to see the first few lines from a file in S3 using AWS CLI? 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