If the boot environment is unbootable, it is marked with an exclamation point (!) in the Active column in the beadm list output.

The beadm command restricts actions on unbootable boot environments as follows:

You cannot activate an unbootable boot environment. (B)

You cannot destroy a boot environment that is both unbootable and marked as active on reboot.

You cannot create a snapshot of an unbootable boot environment.

You cannot use an unbootable boot environment or boot environment snapshot with the -e option of beadm create.

You cannot rename an unbootable boot environment. (C)

Pgrep takes a process name and return a PID.

Note: pgrep looks through the currently running processes and lists the process IDs which matches the selection criteria to stdout. All the criteria have to match. For example, pgrep -u root sshd will only list the processes called sshd AND owned by root.

Incorrec answers:

ps bigscript: You can’t pass a name to ps, it interprets it as arguments.

http://docs.oracle.com/cd/E23823_01/html/819-5461/ghzvz.html

On POSIX-compliant platforms, SIGTERM is the signal sent to a process to request its termination. The symbolic constant for SIGTERM is defined in the header file signal.h. Symbolic signal names are used because signal numbers can vary across platforms, however on the vast majority of systems, SIGTERM is signal #15.

SIGTERM is the default signal sent to a process by the kill or killall commands. It causes the termination of a process, but unlike the SIGKILL signal, it can be caught and interpreted (or ignored) by the process. Therefore, SIGTERM is akin to asking a process to terminate nicely, allowing cleanup and closure of files. For this reason, on many Unix systems during shutdown, init issues SIGTERM to all processes that are not essential to powering off, waits a few seconds, and then issues SIGKILL to forcibly terminate any such processes that remain.

The prctl utility allows the examination and modification of the resource controls associated with an active process, task, or project on the system. It allows access to the basic and privileged limits and the current usage on the specified entity.

How to Change the zone.cpu-shares Value in a Zone Dynamically

This procedure can be used in the global zone or in a non-global zone.

For more information about roles, see Configuring and Using RBAC (Task Map) in System Administration Guide: Security Services.

# prctl -n zone.cpu-shares -r -v value -i zone zonename

idtype is either the zonename or the zoneid. value is the new value.

Note: project.cpu-shares

Number of CPU shares granted to a project for use with the fair share scheduler

The /var/adm/messages is the file to which all the messages printed on the console are logged to by the Operating System. This helps to track back check the console messages to troubleshoot any issues on the system.

Syslog daemon also writes to this /var/adm/messages file.

The /var/adm/messages file monitored and managed by newsyslog and its configuration file is /usr/lib/newsyslog.

This script runs as the roots cron job everyday, checks the /var/adm/messages file and copies/moves it to /var/adm/messages.0, 1, 2, 3, 4, 5, 6, 7. In other words, it does the Log Rotation for the /var/adm/messages.

In an event the /var file system is running out of space, these files needs to checked and can be removed (not the actual /var/adm/messages itself) to free up space on the file system.

However, care has to be taken, if you decide to empty the /var/adm/messages itself for any reason. This process is called Truncation.

SOLARIS SYSTEM ADMIN TIPS, /var/adm/messages

* (Not A, B, C): interval (here 10 seconds): Specifies the length in seconds to pause between each interval report.

* duration (here 24 h)

* -R report[, report] (here high)

Print a summary report.

High Print a summary report detailing the highest usage of each resource and zone during any interval of the zonestat utility invocation.

Note: The zonestat utility reports on the cpu, memory, and resource control utilization of the currently running zones. Each zone ' s utilization is reported both as a percentage of system resources and the zone ' s configured limits.

The zonestat utility prints a series of interval reports at the specified interval. It optionally also prints one or more summary reports at a specified interval.

The default output is a summary of cpu, physical, and virtual memory utilization. The -r option can be used to choose detailed output for specific resources.

B: By carrying SCSI commands over IP networks, the iSCSI protocol enables you to access block devices from across the network as if they were connected to the local system. COMSTAR provides an easier way to manage these iSCSI target devices.

D: Common Multiprotocol SCSI TARget, or COMSTAR, a software framework that enables you to convert any Oracle Solaris 11 host into a SCSI target device that can be accessed over a storage network by initiator hosts.

E: One IP port can handle multiple iSCSI target devices.

www.oracle.com would have to be resolved to an IP name by the domain name service.