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# filegroup

filegroup -- Get file group

## Description

`int filegroup`(string filename);

Returns the group ID of the owner of the file, or false in case of an error. The group ID is returned in numerical format, use posix_getgrgid() to resolve it to a group name.

The results of this function are cached. See clearstatcache() for more details.

> Note: This function does not work on Windows systems

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