在 Ruby 中创建一个空文件：“touch”等效吗？
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Creating an empty file in Ruby: "touch" equivalent?
提问by Abhi Beckert
回答by Dave Newton
FileUtils.touchlooks like what it does, and mirrors*the touchcommand:
FileUtils.touch看起来像它做什么，和镜子*的touch命令：
require 'fileutils'
FileUtils.touch('file.txt')
* Unlike touch(1)you can't update mtime or atime alone. It's also missing a few other nice options.
* 与touch(1)不同，您不能单独更新 mtime 或 atime。它还缺少其他一些不错的选择。
回答by Michael Kohl
If you are worried about file handles:
如果您担心文件句柄：
File.open("foo.txt", "w") {}
From the docs:
从文档：
If the optional code block is given, it will be passed the opened file as an argument, and the File object will automatically be closed when the block terminates.
如果给出了可选的代码块，它将作为参数传递打开的文件，当块终止时，File 对象将自动关闭。
回答by Marc-André Lafortune
In Ruby 1.9.3+, you can use File.write(a.k.a IO.write):
在 Ruby 1.9.3+ 中，您可以使用File.write（又名IO.write）：
File.write("foo.txt", "")
For earlier version, either require "backports/1.9.3/file/write"or use File.open("foo.txt", "w") {}
对于早期版本，require "backports/1.9.3/file/write"或者使用File.open("foo.txt", "w") {}
回答by Boris Stitnicky
And also, less advantageous, but very brief:
而且，不太有利，但非常简短：
`touch file.txt`
回答by WarHog
Just an example:
只是一个例子：
File.open "foo.txt", "w"
