Chapter 14 Getting File Information

Displaying General File Information

Displaying permanent file information with LISTFILE

Displaying temporary file information with LISTFILE...(;TEMP)

Displaying file equations with LISTEQ

Retrieving Specific File Information

[:CMD] FINFO

FFILEINFO

FGETINFO

FLABELINFO

Determining Interactive/Duplicative Files with FRELATE

Displaying File Error Information

FCHECK

FERRMSG

PRINTFILEINFO

Writing a file system error-check procedure

• General File Information covers the commands and intrinsics that you use to obtain information concerning the physical and operational characteristics of your file (defined by device dependencies, a disk file's label, FILE commands, HPFOPEN/FOPEN intrinsic parameters, and file system defaults), as well as access-dependent details about a currently opened file (including EOF and logical record marker locations). Commands and intrinsics described in this section are:

  • LISTFILE command

  • LISTEQ command

  • [CMD] INFO command

  • FFILEINFO intrinsic

  • FGETINFO intrinsic

  • FLABELINFO intrinsic

  • FRELATE intrinsic

• Error information covers the intrinsics that you use specifically to handle file system errors-to identify an error and to display error information at the terminal. This can include a description of the error condition returned by the last file access intrinsic call. Intrinsics described in this section are:

  • FCHECK intrinsic

  • FERRMSG intrinsic

  • PRINTFILEINFO intrinsic