Solaris Operating Environment Boot Camp by David Rhodes
By David Rhodes
This e-book covers Solaris eight and nine in addition to previous models. every one bankruptcy begins with an inventory of proper guide pages and procedure records which are relating to the projects defined within the bankruptcy. All projects are defined intimately and illustrated with instance instructions and the suitable output that method directors will stumble upon. Chapters are awarded in chronological order and canopy the stairs that method directors stick to to construct structures. for instance, Rhodes and Butler begin through including clients onto a unmarried approach, upload the method to the community, circulate directly to configuring providers resembling NFS and NTP—which depend upon the newly-configured network—and so forth till they've got equipped a posh of networked machines utilizing NIS, NTP and a mess of alternative services.The code examples within the publication have all been outfitted and established at the platforms defined in that bankruptcy. Rhodes and Butler additionally offer a couple of instruments, which might be used to watch and deal with the approach, and outline a hierarchy for configuring either the servers and consumers. this can be the better half to the Solaris process directors Reference via Janice Winsor (0130277010)!
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The majority of the Solaris signals are only sent by the kernel if one of two situations arises: • To let a process know that an external event has occurred that has some impact on it (for example, signal 1 is sent to a process if the processes TTY connection is closed) • To let the process know that it has done something it shouldn't have, such as perform a divide by 0 (signal 8) or try to update a memory address that is outside of its allocated address space (signal 11) If you wish to prove the effect any of the Solaris signals has on a process, you can check using the kill command: hydrogen# sleep 500 & 335 hydrogen# ps PID TTY TIME CMD 283 pts/1 0:01 sh 336 pts/1 0:00 ps 335 pts/1 0:00 sleep hydrogen# kill -11 335 335 Segmentation Fault - core dumped hydrogen# ps PID TTY TIME CMD 283 pts/1 0:01 sh 337 pts/1 0:00 ps hydrogen# Trapping Signals It is possible to make any shell scripts you write handle signals by using the trap command.
5 describes the column headings that ps presents us with. 5. Column Headings from ps -ef Column Heading UID PID PPID 36 Description The first column lists the UID of the user that initiated this process. This column lists the process ID of this process. This column lists the process ID of the parent of this process. 37 C STIME TTY Daemon processes will usually have a PPID of 1 (init); processes initiated by a user will usually have a PPID equal to that of the user's shell. This column is actually obsolete now, but used to contain the processor utilization of this process and was used for scheduling purposes.
This daemon process is responsible for running commands at specific dates and times. It looks in configuration files held under /var/spool/cron/crontabs when it first starts up to see what it needs to run and when. This daemon manages the local printer services. This is the Name Service Cache Daemon. conf. conf. This daemon is not started by an rc script, but by the inetd daemon process when a connection is initiated via telnet. There will be 35 one occurrence of this daemon running for each telnet session.