Closing file descriptors

Once all desired operations have been performed on a file descriptor, it must be closed before being discarded. This is accomplished by sending the file descriptor the close message, which deallocates all operating system resources associated with it.

| fd |

(fd := CfsFileDescriptor

open: 'example.txt'

oflag: ORDWR | OCREAT | OTRUNC) isCfsError

ifTrue: [^self error: fd message].

"... Put file operations here ..."

fd close.

"Close file when done"