file_date

Gamma: Version 4.0
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# `file_date`

`file_date` -- gives the file modification date.

## Syntax

    file_date (filename)

## Arguments

`filename`

  A filename as defined by the operating system.

## Returns

The modification date of the file as an integer if the file exists and is readable, else nil.

## Example

        Gamma> fd =(file_date("myfile.dat"));
        936977583
        Gamma> date_of(fd);
        "Fri Sep 10 11:33:03 1999"
        Gamma> file_date("nonexistent.file");
        nil
        Gamma> file_date("unreadable.file");
        nil
        Gamma>

## See Also

`clock`, `date_of`

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