Information Technology Reference
In-Depth Information
Displaying a Device Alias
The
devalias
command is also used to display defined device aliases.
Without any command-line arguments, all defined device aliases are listed.
If a device alias is listed as a command-line argument, the
devalias
com-
mand will display only the named device alias. The following example shows
the
devalias
command from the OpenBoot
ok
prompt of a SPARC 20 work-
station:
ok devalias
screen /iommu@f,e000000/sbus@f,e001000/cgsix@2,0
ttyb /obio/zs@0,100000:b
ttya /obio/zs@0,100000:a
keyboard /obio/zs@0,0
floppy /obio/SUNW,fdtwo
scsi /iommu/sbus/espdma@f,400000/esp@f,800000
net-aui /iommu/sbus/ledma@f,400010:aui/le@f,c0000
net-tpe /iommu/sbus/ledma@f,400010:tpe/le@f,c0000
net /iommu/sbus/ledma@f,400010/le@f,c0000
disk /iommu/sbus/espdma@f,400000/esp@f,800000/sd@3,0
cdrom /iommu/sbus/espdma@f,400000/esp@f,800000/sd@6,0:d
tape /iommu/sbus/espdma@f,400000/esp@f,800000/st@4,0
tape1 /iommu/sbus/espdma@f,400000/esp@f,800000/st@5,0
tape0 /iommu/sbus/espdma@f,400000/esp@f,800000/st@4,0
disk3 /iommu/sbus/espdma@f,400000/esp@f,800000/sd@3,0
disk2 /iommu/sbus/espdma@f,400000/esp@f,800000/sd@2,0
disk1 /iommu/sbus/espdma@f,400000/esp@f,800000/sd@1,0
disk0 /iommu/sbus/espdma@f,400000/esp@f,800000/sd@0,0
ok devalias disk
disk /iommu/sbus/espdma@f,400000/esp@f,800000/sd@3,0
ok
Deleting a Device Alias
An alias defined by the
nvalias
command is stored in the script and remains
there until it is removed by using the
nvunalias
command, or until the sys-
tem configuration is restored to its original defaults using the
set-defaults
command. Keep in mind that an alias defined using the
devalias
command
is
not
stored in the script and is lost when the system is rebooted.
To delete the nonvolatile device alias (an alias stored in the script) named
disk2
, enter the following command at the OpenBoot
ok
prompt:
ok nvunalias disk2
ok
When deleting an alias, be certain that the alias is not used anywhere; otherwise, a
possibly critical system parameter might become undefined.