tcl.list-device

displays the currently defined devices.

The devices listed may be used as 'tape' devices through the 'set-half', 'set-sct', 'set-floppy' or 'set-device' commands.

Devices are numbered from 0 to 15 as they appear in the configuration file. The current device is noted with an '*'.

'device.number' is the device number to list, from 0 to 9. If not specified, all currently defined devices are listed.

When using the (l) option to display long form, the following additional elements are displayed:

Blk=xxx Default block size, in bytes.

Opt='XXX' Device options:

s Short label. Valid only on 8mm tape. This option indicates that the device will write Pick labels in 80-byte blocks, and will attempt to read Pick labels in 80-byte blocks. This option may be necessary to exchange 8mm tapes with non-AP systems. A tape written on a device which has the 's' option set cannot be read without this option. The default is to write the 80-byte label in a 512-byte block. This option can be changed by the 'chg-device' command.

r Immediate rewind. On some Unix implementations, some devices support an immediate rewind, which means control is returned to the process immediately, without having to wait for the rewind to complete.

l Link field on tape for ABS restore. This option is an internal flag used at boot time when restoring an ABS from this device.