User Guide

Ampex 1308911-02 6-53
DD-2 Utilities Manual Pages dd2_space_tape
6.17 dd2_space_tape
NAME
dd2_space_tape - change current position by a specified number of blocks or files, or set
current position to end of data (EOD) in the current partition.
SYNOPSIS
dd2_space_tape -space <spacing_spec> [ -f <device_special_file> ]
dd2_space_tape -help [ help_type ]
DESCRIPTION
dd2_space_tape performs relative rather than absolute positioning. The current position can
be changed by:
• Spacing forward or backward by the specified number of filemarks. The destination
position will be at the beginning or end of a file, respectively; i.e., at the end of tape (EOT)
side of a filemark when spacing forward, or the beginning of tape (BOT) side of a
filemark when spacing backward.
• Spacing forward or backward by the specified number of user blocks within a file.
• Spacing forward to EOD in the current partition.
dd2_space_tape
is available to all users.
OPTIONS
-f < device_special_file >
Specifies the device special file to use for the operation (see Appendix B).
ARGUMENTS
-help [ help_type ]
Displays help on stderr and invalidates all other options, cancelling any other actions. Valid
keywords for the optional help_type specification are: stdout, revision, and v_revision.
-space <
spacing_spec>
Specifies the relative location you want the tape drive to position to. You must provide a -space
<spacing_spec> argument except when using the -help argument.