1z0-821 Exam Dumps - Oracle Solaris Questions and Answers

ZFS Deduplication Property

Solaris Express Community Edition, build 129: In this Solaris release, you can use the deduplication property to remove redundant data from your ZFS file systems. If a file system has the dedup property enabled, duplicate data blocks are removed synchronously. The result is that only unique data is stored and common components are shared between files.

You can enable this property as follows:

# zfs set dedup=on tank/home

A 24-bit network mask is expressed as 255.255.255.0.

C: Here the wildcard character ? is used (Matches any single character).

file1 and file2 will be copied into dir1

F: the two files file1 and file2 are copied into directoy dir1.

Note: cp - copy files and directories

Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.

Cp has three principal modes of operation. These modes are inferred from the type and count of arguments presented to the program upon invocation.

* When the program has two arguments of path names to files, the program copies the contents of the first file to the second file, creating the second file if necessary.

* When the program has one or more arguments of path names of files and following those an argument of a path to a directory, then the program copies each source file to the destination directory, creating any files not already existing.

* When the program's arguments are the path names to two directories, cp copies all files in the source directory to the destination directory, creating any files or directories needed. This mode of operation requires an additional option flag, typically r, to indicate the recursive copying of directories. If the destination directory already exists, the source is copied into the destination, while a new directory is created if the destination does not exist.