Question

在bash脚本中，我想复制一个文件，但文件名会随着时间而改变。然而，文件名的开头和结尾将保持不变。

有没有办法让我得到这样的文件：

  cp start~end.jar

哪里〜可以是什么？

cp命令将在ubuntu机器上运行一个bash脚本，如果这样做有所不同。

Answer 1

glob（start*end）将为您提供所有匹配的文件。

查看bash手册的Expansion > Pathname Expansion > Pattern Matching部分以获取更具体的控制

   *      Matches any string, including the null string.
   ?      Matches any single character.
   [...]  Matches any one of the enclosed characters.  A pair of characters separated by a hyphen denotes a range expression; any character that sorts between those two characters, inclusive, using the current locale's collat-
          ing sequence and character set, is matched.  If the first character following the [ is a !  or a ^ then any character not enclosed is matched.  The sorting order of characters in range expressions  is  determined  by
          the  current locale and the value of the LC_COLLATE shell variable, if set.  A - may be matched by including it as the first or last character in the set.  A ] may be matched by including it as the first character in
          the set.

如果您启用extglob：

  ?(pattern-list)
         Matches zero or one occurrence of the given patterns
  *(pattern-list)
         Matches zero or more occurrences of the given patterns
  +(pattern-list)
         Matches one or more occurrences of the given patterns
  @(pattern-list)
         Matches one of the given patterns
  !(pattern-list)
         Matches anything except one of the given patterns

Answer 2

使用glob捕获变量文本：

cp start*end.jar

bash复制文件，其中一些文件名未知

2 个答案: