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The os.Path.extension method is used to return the extension of the file. The syntax of the function is as follows:
CALL os.Path.extension(f_name) RETURNING extension
where:
· f_name = a string standing for the file name with its extension after the last dot,
· extension = a STRING variable containing the part of the f_name following the last dot in it.
Usage
If no extension is specified in the f_name, the function returns NULL.
Here is an example of the os.Path.extension method calling:
#returns "txt"
CALL os.Path.extension ("File_name.txt") RETURNING extension