FieldSize (Built-in Mathematica Symbol)

FieldSize is an option for InputField, PopupMenu, and related functions that specifies the size of the field allowed for input or contents.

FileBaseName (Built-in Mathematica Symbol)

FileBaseName["file"] gives the base name for a file without its extension.

FileByteCount (Built-in Mathematica Symbol)

FileByteCount["file"] gives the number of bytes in a file.

FileDate (Built-in Mathematica Symbol)

FileDate["file"] gives the date and time at which a file was last modified. FileDate["file", " type"] gives information on the specified type of date associated with a file.

FileExistsQ (Built-in Mathematica Symbol)

FileExistsQ["name"] gives True if the file with the specified name exists, and gives False otherwise.

FileExtension (Built-in Mathematica Symbol)

FileExtension["file"] gives the file extension for a file name.

FileFormat (Built-in Mathematica Symbol)

FileFormat["name"] attempts to determine what Import format could be used to import the file corresponding to " name".

FileHash (Built-in Mathematica Symbol)

FileHash["file"] gives an integer hash code for the contents of the specified file.FileHash["file", " type"] gives an integer hash of the specified type.

FileNameDepth (Built-in Mathematica Symbol)

FileNameDepth["file"] gives the number of path elements in the file name " file".

FileNameDialogSettings (Built-in Mathematica Symbol)

FileNameDialogSettings -> {opt -> val} is a global option that specifies settings for the Insert File Path dialog box.