bash for循环中的文件名不带扩展名

${f%%.*}

请注意，您需要贪婪版本，因为文件名中有多个点。

从bash手册：

${parameter%word}

${parameter%%word}

The word is expanded to produce a pattern just as in filename expansion. If the pattern matches a trailing portion of the expanded value of parameter,then the result of the expansion is the value of parameter with the shortest matching pattern (the ‘%’ case) or the longest matching pattern (the ‘%%’ case) deleted. If parameter is ‘@’ or ‘’,the pattern removal operation is applied to each positional parameter in turn,and the expansion is the resultant list. If parameter is an array variable subscripted with ‘@’ or ‘’,the pattern removal operation is applied to each member of the array in turn,and the expansion is the resultant list.