The interactive OPEN command opens a file for listing and initiates the interactive list routine. A list of the file attributes is given in response to the command. After the OPEN command completes, you can use only the interactive list routine commands. The list routine must end—with a QUIT command, for example—before you can enter the standard DUMPALL commands.

Syntax

── OPEN ─┬─<file title>──────┬─┬─────────────────────────────┬─────────┤
         ├─<long file title>─┤ └─ ( ──<file attributes>── ) ─┘
         ├─ UL ──<old specs>─┤
         └─ FR ──<old specs>─┘

Explanation

OPEN <file title>

OPEN <long file title>

Initiates an interactive list routine session for the specified file. After the file attributes are listed, you can enter any interactive list routine command.

UL <old specs>

Specifies an unlabeled file. Use old specs to assign values to the INTMODE, MAXRECSIZE, and BLOCKSIZE attributes for the file.

<old specs>

Use old specs with unlabeled or nonstandard labeled tape files to assign values to the attributes INTMODE, MAXRECSIZE, and BLOCKSIZE. Refer to “Old Specs” later in this section for more information about <old specs>.

FR <old specs>

Specifies an unlabeled tape file that has only one reel, with reel switching suppressed—that is, the file has a LABEL attribute value of OMITTEDEOF. You can use old specs to assign values to the INTMODE, MAXRECSIZE, and BLOCKSIZE attributes for the file.

(<file attributes>)

Causes DUMPALL to use the specified file attributes when it opens the file.