Glob 到后缀在数字范围内的文件

Question

I have a list of files with the following names:

document1
document2
document3
..
document41
document42
document43

To check all the all document space, I could use du -sh file*. I am trying to access documents from document1 to document 10. I tried the following:

du -sh document[1-10]

But it returns document 28 and document 15 . I would like to know how could I access a range of files with document name from document1 to document10?

Answer 1

如果dan 的解决方案太多而无法输入或记住，您可以使用bash 的大括号扩展功能来创建十个文件名，然后通过将 stderr 重定向到 /dev/null 来删除du关于丢失文件的潜在错误消息：

du -sk document{1..10} 2>/dev/null

Answer 2

In bash:

shopt -s nullglob
du -sh document[1-9] document1[0]

Only existing files numbered 1-10 will be passed to du .

Regular sh doesn't have nullglob. If a pattern doesn't match, it's passed literally. This causes either a file not found error, or importantly, a non matching file to be passed (ie. an existing file literally named document1[0] ).