Get 1z0-821 Dumps : Verified Oracle Solaris 11 System Administration

A: The beadm utility includes support for creating and administering non-global zone boot environments.

Note: A boot environment is a bootable instance of the Oracle Solaris operating system image plus any other application software packages installed into that image. System administrators can maintain multiple boot environments on their systems, and each boot environment can have different software versions installed.

B: Role-based access control (RBAC) is a security feature for controlling user access to tasks that would normally be restricted to the root role. By applying security attributes to processes and to users, RBAC can divide up superuser capabilities among several administrators.

The coreadm command is used to specify the name and location of core files produced by abnormally-terminating processes.

B: banner

Displays power-on banner.

The PROM displays the system banner. The following example shows a SPARCstation 2 banner. The banner for your SPARC system may be different.

SPARCstation 2, Type 4 Keyboard

ROM Rev. 2.0, 16MB memory installed, Serial # 289

Ethernet address 8:0:20:d:e2:7b, Host ID: 55000121

C: .version

Displays version and date of the boot PROM.

Note: OBP-OpenBootProm is a firmware which is placed on the sun machine's prom chip.

It is a os independent user interface to deal with the sun machine's hardware components.

The user interface provides one or more commands to display system information.

In the Bourne Again, C, Korn, TC, and Z shells, the tilde (~) is used as a shortcut for specifying your home directory.

cd –

It's the command-line equivalent of the back button (takes you to the previous directory you were in).

Note:

To make certain that you are in your home directory, type the cd (change directory) command. This command moves you to your home (default) directory.

First line (rm file1) deletes/removes file1.

Second line captures the text into file2.

The first part of line 3 (cat file1) fails as the file1 does not exist.

The && (AND) operator will ensure that the third line fails. The result of line 3 will be the result of first part of line 3 (cat file1).

Note: cat - concatenate files and print on the standard output

Note #1: A list is a sequence of one or more pipelines separated by one of the operators ‘;’, ‘&’, ‘&&’, or ‘||’, and optionally terminated by one of ‘;’, ‘&’, or a newline.

Of these list operators, ‘&&’ and ‘||’ have equal precedence, followed by ‘;’ and ‘&’, which have equal precedence.

AND and OR lists are sequences of one or more pipelines separated by the control operators ‘&&’ and ‘||’, respectively. AND and OR lists are executed with left associativity.

An AND list has the form

command1 && command2

command2 is executed if, and only if, command1 returns an exit status of zero.

An OR list has the form

command1 || command2

command2 is executed if, and only if, command1 returns a non-zero exit status.

The return status of AND and OR lists is the exit status of the last command executed in the list.

Note #2 (on exit status): Zero means command executed successfully, if exit status returns non-zero value then your command failed to execute.