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Use this skill when the user wants to format, parse, add, subtract, or compare dates and times from the command line, or manipulate timestamps in log files.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/javimosch/supercli --skill biff命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
基于 SOC 职业分类
正在显示 SKILL.md
| name | biff |
| description | Use this skill when the user wants to format, parse, add, subtract, or compare dates and times from the command line, or manipulate timestamps in log files. |
Datetime arithmetic, parsing, formatting, timezone conversion, sequence generation, and log timestamp tagging for the command line. By BurntSushi (author of ripgrep, xsv, and jiff).
biff time fmt — Format one or more timestampsbiff time add — Add a duration to a timestampbiff span since — Calculate the duration since a given timestampbiff self version — Print biff versionbiff _ _ — Passthrough to biff CLIcargo install biff
# Print the current time
biff _ _
# Format current time as RFC 3339
biff time fmt -f rfc3339 now
# Format current time as RFC 9557 (with timezone)
biff time fmt -f rfc9557 now
biff -f now
biff -f now -1d
biff add -1w now
biff add now
biff add 6mo now
biff now | biff _ _ Asia/Bangkok | biff _ _ round -i 15 -s minute
biff span since 2025-01-20T12:00
biff span since 2025-01-20T12:00 -l year
biff span since 2025-01-20T12:00 | biff _ _ span round -l year -s day
biff _ _ day today -c5 -H 9 -w mon,wed,fri
biff _ _ daily -- $(biff _ _ end-of month now) today
biff _ _ -c12 monthly -w mon,tue,wed,thu,fri --set-position -1 | biff -f
biff _ _ tag lines /tmp/access.log | biff _ _ system | biff -f | -n3 | biff _ _ untag -s