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Operating Systems HP-UX Display SAM user list at the command line Post 303011966 by Don Cragun on Friday 26th of January 2018 03:57:29 PM
Old 01-26-2018
From your description, I am not at all sure that I understand what you are trying to do.

Are you trying to create a file that looks like the file you showed us in post #1 from unspecified input sources? If this is what you want, how are we supposed to guess where this data comes from?

Or, do you have a text file like the file you showed us in post #1 from which you want to extract a list of login names, a list of user IDs, or a list of real names? If this is what you want, which of those three lists do you want? And, what form should that list take? (All values on one line with a comma between values? All values on one line with a tab between them? Each value on a separate line? ...)

If you want a list of real names, you need to give us some way to clearly identify where that name starts and ends in your file. (In you sample data sometimes it is the 5th word, sometimes it is the 5th and 6th word, sometimes it is the complete line with the 1st 4 fields and the last field removed and then removing leading and trailing spaces on what is left, and sometimes it is the complete line with the 1st 4 fields and the last 2 fields removed and then removing the leading and trailing spaces. The starting character position and ending character position vary between lines, so we can't just use character positions.)

Once you have your file or list, what are you going to do with it?

You said you tried RTFM. Which pages in the manual did you try to read? Did you look at cut and tail? Did you look at awk?

Which HPUX release are you using?

Which shell are you using?
 

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SAM_OVERVIEW(8) 				    Corosync Cluster Engine Programmer's Manual 				   SAM_OVERVIEW(8)

NAME
sam_overview - Overview of the Simple Availability Manager OVERVIEW
The SAM library provide a tool to check the health of an application. The main purpose of SAM is to restart a local process when it fails to respond to a healthcheck request in a configured time interval. During sam_initialize(3), a duplicate copy of the process is created using the fork(3) system call. This duplicate process copy contains the logic for executing the SAM server. The SAM server is responsible for requesting healthchecks from the active process, and controlling the lifecycle of the active process when it fails. If the active process fails to respond to the healthcheck request sent by the SAM server, it will be sent a user configurable signal (default SIGTERM) to request shutdown of the application. After a configured time interval, the process will be forcibly killed by being sent a SIGKILL signal. Once the active process terminates, the SAM server will cre- ate a new active process. The Simple Availability Manager is meant to be used in conjunction with the cpg service. Used together, it is possible to restart a cpg process that fails healthchecking during operation. The main features of SAM include: o A configurable recovery policy. o A configurable time interval for health check operations. o A notification via signal before recovery action is taken. o A mechanism to indicate to the application the number of times an active process has been created by the SAM server. o Both application driven health checking and event driven health checking. Initializing SAM The SAM library is initialized by sam_initialize(3). sam_initalize(3) may only be called once per process. Calling it more then once has undefined results and is not recommended or tested. Setting warning callback User configurable signal (default SIGTERM) is sent to the application when a recovery action is planned. The application can use the sig- nal(3) system call to monitor for this signal. There are no special constraints on what SAM apis may be called in a warning callback. After time_interval expires, a SIGKILL signal is sent to the active process to force its termination. Registering the active process The active process is registered with SAM by calling sam_register(3). This function should only be called one time in a process. After a recovery action is taken, the new active process will begin execution at the next line of code in a user process after sam_register(3). Enabling event driven healthchecking Two types of healthchecking are available to the user. The first model is one where the user application healthchecks during its normal operation. It is never requested to healtcheck, and if the active process doesn't respond within the time interval, the process will be restarted. A more useful mechanism for healthchecking is event driven healthchecking. Because this model is directed by the SAM server, It isn't nec- essary to guess or add timers to the active process to signal a healthcheck operation is successful. To use event driven healthchecking, the sam_hc_callback_register(3) function should be executed. BUGS
SEE ALSO
sam_initialize(3), sam_finalize(3), sam_start(3), sam_stop(3), sam_register(3), sam_warn_signal_set(3), sam_hc_send(3), sam_hc_call- back_register(3) corosync Man Page 12/01/2009 SAM_OVERVIEW(8)
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