执行名称中带 * 的 ls 命令

发布于 2024-11-27 17:00:43 字数 472 浏览 1 评论 0原文

我想对名为 /var/local/tmp/foo* 的文件执行 ls 命令。我一直在尝试使用，

%x[ls "#{path]"]

但会返回：

ls: /var/local/tmp/foo*: No such file or directory

请注意 %x[ls '/var/local/tmp/foo*'] 也会返回上述错误。

如果我执行相同的命令，但如下所示：

%x[ls /var/local/tmp/foo*]

它可以正常工作。

我猜测将目录路径放入字符串中会导致 ls 将其视为字面名为“/var/local/tmp/foo*”的文件。

有什么想法可以解决这个问题吗？我想使用一个保存该字符串的变量，因此直接放入 /var/local/tmp/foo* 不是一个选择。

原文

I would like to perform an ls command on a file named like /var/local/tmp/foo*. I have been trying to use

%x[ls "#{path]"]

but this returns:

ls: /var/local/tmp/foo*: No such file or directory

Note that %x[ls '/var/local/tmp/foo*'] also returns above error.

If I do the same command, but as follows:

%x[ls /var/local/tmp/foo*]

it works correctly.

I am guessing that putting the directory path into a string is causing ls to treat it as a file literally named "/var/local/tmp/foo*".

Any ideas how to get around this? I would like to use a variable that holds this string, so just putting in /var/local/tmp/foo* directly is not an option.

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箜明 2024-12-04 17:00:43

像 "/path/to/*" 之类的东西被称为 glob，它们实际上是由 shell 扩展的，而不是由 这样的命令扩展的代码>ls。虽然您可以运行 shell 来让它为您扩展 glob，但使用内置的 Dir 类。

Dir["/path/to/*.txt"]

这将返回匹配文件名的数组。

Something like "/path/to/*" is called a glob, and they are actually expanded by the shell, not by commands like ls. While you could run the shell to have it expand the glob for you, it is easier to just use the built-in Dir class.