TOPS-20 Commands Reference Manual

DEASSIGN

Releases a device from your job and places the device back in the pool of available devices.

Format

@DEASSIGN (DEVICE) dev:

where:

dev:	is the name of the device you want to deassign; an asterisk (*) deassigns all devices (except your log-in terminal) assigned to your job. The colon after the device name is optional.

Restrictions

Open Files

The DEASSIGN command will not deassign a device that is accessing an open file. An error is generated, and the device is not deassigned until that file is closed or until you log out. When you log out, all devices are deassigned.

Related Commands

ASSIGN	for assigning a particular device to your job
INFORMATION AVAILABLE DEVICES	for finding out which devices are available, and which ones have already been assigned to your job
MOUNT	for mounting a structure or magnetic tape and assigning the first available disk drive or tape drive to your job

Examples

Deassign a device (in this case a card reader).
```
@DEASSIGN PCDR0:
```

Find out which devices are assigned to your job, then deassign all of these. Verify that this was done. (Note that your terminal, in this case TTY222:, is never deassigned.)

@INFORMATION AVAILABLE DEVICES
Devices available to this job:
 DSK, PS, SNARK, PACK, FTN20, MTA2, MT0, LPT, LPT0, LPT1
 CDR, PCDR0, CDP, FE1-15, PTY15-61, NUL, PLT, PLT0, DCN
 SRV
Devices assigned to/opened by this job: MTA2, MT0, PCDR0
 TTY222, PTY15
@DEASSIGN *
@INFORMATION AVAILABLE DEVICES
Devices available to this job:
 DSK, PS, SNARK, PACK, FNT20, MTA2, LPT, LPT0, LPT1
 CDR, PCDR0, CDP, FE1-15, PTY15-61, NUL, PLT, PLT0
 DCN, SRV
Devices assigned to/opened by this job: TTY222

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