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FileTools

  

IsReadable

  

determine if the user has read permission for a file

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

IsReadable(file)

Parameters

file

-

filename or the file descriptor of an open file

Description

• 

The IsReadable(file) command returns true if the user has read permission for the specified file.  If the user does not, false is returned.

• 

If the file does not exist or an invalid file descriptor is passed, an exception is raised.

Examples

FileTools[Text][WriteString]file,data:

FileTools[Text][Close]file:

FileTools[IsReadable]file

true

(1)

FileTools[Remove]file

See Also

file_types

FileTools

FileTools[Exists]

FileTools[IsExecutable]

FileTools[IsWritable]

FileTools[ModificationTime]

FileTools[Remove]

FileTools[Size]

FileTools[Status]

FileTools[Text][Close]

FileTools[Text][WriteString]

IO_errors

 


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