Consider the following commands on a newly installed system:
zfs set compression=on rpool
zfs get –H –o source compression rpool
What is the output of the second command?
A.
default
B.
–
C.
local
D.
on
Explanation:
The zfs get command supports the -H and -o options, which are designed for scripting. You can use the -H
option to omit header information and to replace white space with the Tab character. Uniform white space
allows for easily parseable data. You can use the -o option to customize the output in the following ways:
* The literal name can be used with a comma-separated list of properties as defined in the Introducing ZFS
Properties section.
* A comma-separated list of literal fields, name, value, property, and source, to be output followed by a space
and an argument, which is a comma-separated list of properties.
The following example shows how to retrieve a single value by using the -H and -o options of zfs get:
# zfs get -H -o value compression tank/home
on