find: paths must precede expression

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本文介绍了在Linux环境中使用find命令搜索文件时遇到的一个常见错误：find: paths must precede expression。此错误通常发生在使用通配符(*)搜索特定类型的文件时。文章详细解释了错误产生的原因，并提供了两种有效的方法来避免shell提前解析通配符，确保find命令能够正确地搜索到目标文件。

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In Linux bash you may face an error while using wildcard * to search files. For e.g. trying to search all jar files with following command:

find . -name *.jar

will give following error:

find: paths must precede expression

Usage: find [-H] [-L] [-P] [path...] [expression]

Reason is that * is interpreted by shell itself before arguments are passed to find command. * will resolve to all folders and files within current folder, hence does not make much sense with .jar extension at the end. For this reason we need to escape * somehow so that it goes to find command as it is, without expanded by shell. There are 2 ways that I know;

find . -name \*.jar

second is

find . -name '*.jar'