{"id":32431287,"url":"https://github.com/zeddo123/csvcat","last_synced_at":"2026-07-03T18:36:28.949Z","repository":{"id":162587835,"uuid":"637098233","full_name":"zeddo123/csvcat","owner":"zeddo123","description":"Lighting-fast csv file concatination and filtering written in Go.","archived":false,"fork":false,"pushed_at":"2023-08-31T20:14:01.000Z","size":33,"stargazers_count":1,"open_issues_count":1,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-10-25T21:58:54.450Z","etag":null,"topics":["clitool","csv","csvfile","go","golang"],"latest_commit_sha":null,"homepage":"","language":"Go","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"gpl-3.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/zeddo123.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2023-05-06T13:56:58.000Z","updated_at":"2025-03-21T16:05:04.000Z","dependencies_parsed_at":"2024-06-19T18:58:27.855Z","dependency_job_id":null,"html_url":"https://github.com/zeddo123/csvcat","commit_stats":null,"previous_names":[],"tags_count":3,"template":false,"template_full_name":null,"purl":"pkg:github/zeddo123/csvcat","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/zeddo123%2Fcsvcat","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/zeddo123%2Fcsvcat/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/zeddo123%2Fcsvcat/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/zeddo123%2Fcsvcat/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/zeddo123","download_url":"https://codeload.github.com/zeddo123/csvcat/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/zeddo123%2Fcsvcat/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":35097759,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-26T15:22:16.424Z","status":"online","status_checked_at":"2026-07-03T02:00:05.635Z","response_time":110,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["clitool","csv","csvfile","go","golang"],"created_at":"2025-10-25T21:58:19.553Z","updated_at":"2026-07-03T18:36:28.943Z","avatar_url":"https://github.com/zeddo123.png","language":"Go","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Csvcat\n`csvcat` is a very fast csv files compiler (with filtering) written in Go. Using concurrency, `csvcat` can concat and filter \na huge number of files without loosing to much in terms of memeroy and processing time.\n\nUsing a dummy dataset generated from `generate_set.py` with `100` files that have each `100000` lines (around 1.4G) in concurrent and non-concurrent\nmodes to filter 5 columns out of 10, cvscat take around (on an i7-7820HQ (8)):\n```sh \n$ ./csvcat --columns \"B,A,E,C,F\" --delimiter \",\" --directory \"csvset\" --concurrency=true\nNumber of files found: 100\n============ Total 3.933102857s ===================\n$ ./csvcat --columns \"B,A,E,C,F\" --delimiter \",\" --directory \"csvset\" --concurrency=false\nNumber of files found: 100\n============ Total 10.588019261s ===================\n```\n\n## Usage of `csvcat`\n```\nUsage of ./csvcat:\n  -batch int\n    \tBatch size (default 30)\n  -c\tSet to false to ignore checking extension (default true)\n  -columns string\n    \tColumns to be selected\n  -concurrency\n    \tSet flag to disable concurrency (default true)\n  -delimiter string\n    \tCsv delimiter of files (default \",\")\n  -directory string\n    \tDirectory containing the files to be compilled (default \".\")\n  -output string\n    \tOutput filename (default \"output.csv\")\n  -v\tSet to true to have verbose output\n```\nHere's an example of how you might run `csvcat` with its flags:\n```\n./csvcat --batch 20 --columns \"A,B,C\" --delimiter \",\" --directory files\n```\n\n`csvcat` expects every csv file to have a header in its first line where all the columns are labled so that\nit can filter the correct columns. If the csv file is not correctly formated (some lines have more/less columns),\nit will try to add an empty column in the correct location.\n\n\n## Building `csvcat`\nTo build `csvcat` you need to run:\n```sh\ngo build .\n// or\ngo install .\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fzeddo123%2Fcsvcat","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fzeddo123%2Fcsvcat","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fzeddo123%2Fcsvcat/lists"}