ansitape.5 (2012 03)

ANSITAPE(5) ANSITAPE(5)
Field Width Example Use
Second file header.HDR2 4 HDR2
Rec Format 1 D Record format.
Blk Length 5 02048 Tape block size.
Rec Length 5 00080 Record size.
Density 1 3 Recording density code.
1 if this is a continua-
tion of a file from a pre
-
vious reel.
Vol Switch 1 0
Job 17 user/program See following notes.
Recording 2 space Unused in 9-track tapes.
Car Control 1 space See following notes.
Blocking 1 B See following notes.
IGN 11 << ignored >>
Bytes to skip at front of
each block.
Offset 2 00
Rec Format A single character indicating what type of records are provided. The codes are
Code Meaning
F Fixed-length
D Variable up to rec length
V IBM code for variable
U Unknown
Job The name of the job (username in Unix) right-padded to 8 characters, a slash (/), and the
job step (program name in Unix) right-padded to 8 characters. This identifies where the
JCL was when this file was created.
Carriage Control
Normally a space, indicating that the records do not contain carriage control informa-
tion. When printed, each record is placed on a separate line. If an ’A’ is used, the first
character of each record is presumed to be a Fortran carriage-control character.
VAX/VMS also uses ’M’ to indicate that carriage-control is embedded as part of the data.
This is usually used in the case of binary files.
Blocking The B indicates that as many records as will fit are placed in a physical tape block.
Records do not cross block boundaries. A space indicates only one record per physical
tape block.
HP-UX 11i Version 3: March 2012 − 3 − Hewlett-Packard Company 3