mv命令末尾的星号是做什么的 [英] What does an asterisk at the end of a mv command do

问题描述

所以我要移动一堆文件

mv /source /dest &
mv /source/* /dest/dest/ &
...
...

然后我变得粗心

mv /source/filena* /dest/dest/ *

天哪！ ^ c ^ c ^ c ^ c [终端命令无响应]到底是怎么回事?

OMG! ^c^c^c^c [No Response from terminal command] What is actually going on here?

当我在命令末尾放置 * (星号)而不是& (&"号)时会发生什么?

What happens when I put an * (asterisk) at the end of a command instead of an & (ampersand)?

推荐答案

shell扩展了通配符 * . mv 命令从不会看到通配符，只能看到扩展的结果.

The shell expands the wildcard *. The mv command never sees the wildcard, only the result of the expansion.

通配符 * 按字典顺序扩展到当前目录中的文件列表.如果最后一个文件是目录，则所有前面的文件(/source.filenafoo ，/source/filenabar ，/dest/dest ， hello )将移至该子目录.如果最后一个文件不是目录，mv 会抱怨目标 a.png 不是目录"(或类似的话).

The wildcard * expands to the list of files in the current directory in lexicographic order. If the last file is a directory, then all the preceding files (/source.filenafoo, /source/filenabar, /dest/dest, hello) are moved to that subdirectory. If the last file is not a directory, mv complains that "target a.png is not a directory" (or words to that effect).

请参阅 mv是什么./*不指定目的地吗?以获得更详细的示例.

See What does mv ./* without specifying destination do? for more detailed examples.

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