User Guide

2-4 Ampex 1308910-01
Model No.
Running Head
ACL Utilities Overview ACL Application Programmer’s Guide
ENXIO Device does not exist.
EPERM Access denied due to device special file permissions.
ETIME A timeout occurred on a SCSI command.
2.4.6 Restrictions
None; all libacl API functions are available to all users
2.5 ACL Utilities Overview
The ACL utilities provide command-line access to an Ampex DST ACL. It is compatible with
the DST/DIS Tape Management (DD-2) Utilities and can be used together with them in scripts
that perform higher-level operations. Both sets of utilities use a consistent set of input and
output conventions that make them easy to integrate.
2.5.1 Exit Status
The ACL utilities use the following exit status codes to indicate success or failure. To view the
status code, type
echo $status (C-Shell).
0 Operation succeeded.
nonzero Operation failed.
On failure, all utilities automatically perform one retry. A nonzero exit status indicates that the
retry also failed.
2.5.2 Errors
See “Exit Status” on page 5-7 for information on ACL utilities error reporting.
2.5.3 UNIX Platform Compatibility
All of the ACL utilities operate consistently across supported platforms.
2.5.4 Open behavior
Each ACL utility handles the opening and closing of the ACL.
2.5.5 Restrictions
None; all ACL utilities are available to all users.