Check If File Exists In S3 Bucket
Answer : If you do aws s3 ls on the actual filename. If the filename exists, the exit code will be 0 and the filename will be displayed, otherwise, the exit code will not be 0: aws s3 ls s3://bucket/filname if [[ $? -ne 0 ]]; then echo "File does not exist" fi first answer is close but in cases where you use -e in shebang, the script will fail which you would most like not want. It is better to use wordcount. So you can use the below command: wordcount=`aws s3 ls s3://${S3_BUCKET_NAME}/${folder}/|grep $${file}|wc -c` echo wordcount=${wordcount} if [[ "${wordcount}" -eq 0 ]]; then do something else do something fi Try the following : aws s3api head-object --bucket ${S3_BUCKET} --key ${S3_KEY} It retrieves the metadata of the object without retrieving the object itself. READ(s3:GetObject) access is required. .