# README.md > Author: Yaqing Liu > > Email: [yaqing.liu@outlook.com](mailto:yaqing.liu@outlook.com) > > Last Updates: 08/04/2021 This app generates the MD5 of the INPUT files in bulk. The OUTPUT.md5 file consists of n rows and 2 columns, the first column is the MD5 code and the second column is the corresponding file name. #### Requirements - choppy - Ali-Cloud - Linux #### Usage ```Shell # Install choppy install YaqingLiu/MD5 # Prepare the input file: samples.json # Submit your task choppy batch YaqingLiu/MD5-latest samples.json -p project_name ``` #### Input Please note that the input file is in JSON format. ```Json { "sample_id": "sample_id", "INPUT": [ "file_1", "file_2", "file_3", ..., "file_n"] } ```