使用 Homebrew, apt, Nix 安装 bar

项目链接

• 主页
• 软件包管理器页面

命令和别名

• bar

项目历史

Henrik Theiling's project page frames bar as deliberately minimal shell code that needs no compilation and works across sh, ash, ksh, zsh, bash, and related Bourne-style shells. The design goal is portability first: when progress display cannot be supported safely, the script is intended to fall back toward plain cat behavior.

The upstream change log records a compact evolution from version 1.0's initial release through 1.1 percentage and terminal-width support, 1.2 robustness fixes across shells and systems, 1.3 feature additions such as ETA and configurable sizing, and 1.4 bug fixes.

采用历史

bar's adoption is narrow but very Unix-shaped: it appears in Homebrew, Debian, Ubuntu, and Nix package metadata as a tiny helper for shell scripts rather than as a large standalone application.

使用方式

The typical use is to pipe or copy data while presenting a text progress indicator in an install script or other shell workflow. Its upstream page emphasizes embedding or reusing the script body in portable installers.

为什么软件包爱好者会关心

bar is interesting because it solves a common packaging-era problem without a compiled dependency, curses UI, or modern shell assumptions. It is the sort of small, old-school utility that package managers preserve because it remains useful in constrained Unix environments.

时间线

• Version 1.0: Initial beta release.
• Version 1.1: Adds percentage display and terminal-width detection.
• Version 1.2: Focuses on robustness across Bourne shells and operating systems.
• Version 1.3.1: Adds ETA, quiet mode, size overrides, and script-dumping features after a broken 1.3 prerelease.
• Version 1.4: Stable bug-fix release.

Related projects

• bar overlaps with cat, dd, pv, and shell progress-bar snippets, but its upstream niche is stricter portability and embeddability in Bourne-shell install scripts.

来源

• http://www.theiling.de/projects/bar.html
• source_facts.description
• source_facts.package-manager