z os unix system services

... File system cấn mount Mount point Type Mount options Dump Pass frequency number - Bạn sửa file /etc/fstab để mount/umount lênh vi : vi /etc/fstab 7/ Định dạng filesystem: - Kiểm tra file system ... filesystem: - Kiểm tra file system mounted hệ thống: df -lT - Định dạng kiểu file system /dev/sda4 sang ext3: o Umount file system /dev/sda4: umount /dev/sda4 o Thực lệnh : mkfs –t ext3 /dev/sda4 Biên ... 38244041 – 0989012418 www.athena.edu.vn o Mount lại file system /dev/sda4: mount /dev/sda4 /data o Kiểm tra: df –lT 8/ Chuẩn đoán sửa lỗi file system: - Thực lệnh: fsck –a /dev/sda4 (option –a: tự...

Ngày tải lên: 29/09/2013, 20:20

... malloc(sizeof(DIR))) == NULL) return NULL; dp->fd = fd; return dp; } 149 closedir closes the directory file and frees the space: /* closedir: close directory opened by opendir */ void closedir(DIR ... calloc(n,size) returns a pointer to n objects of size size, with the storage initialized to zero Write calloc, by calling malloc or by modifying it Exercise 8-7 malloc accepts a size request ... present minimal versions of opendir, readdir, and closedir for a specific system The following routines are for Version and System V UNIX systems; they use the directory information in the header...

Ngày tải lên: 30/09/2013, 06:20

... 11: System Services Module Strategy Use the following strategy to present this module: ! Introduction to System Services The purpose of this section is to introduce students to the system services ... COM+ applications will use the system services, you should put as few barriers as possible between the other layers and the system services 12 Module 11: System Services One barrier is the process ... 11: System Services iii Instructor Notes Presentation: 75 Minutes Lab: 30 Minutes This module provides students with an introduction to system services This module focuses on the system services...

Ngày tải lên: 11/12/2013, 14:15

... 66 Activity 9.2: Identifying System Services Exercise 1: Identifying a Set of System Services for a Scenario (10 minutes) ! Identify required system services Participate in small groups ... experienced explosive growth, going from employees to 60 The company needs to promote inter-company communication now Solution A B Activity 9.2: Identifying System Services 67 Exercise 2: Analyzing Technology ... on a flip chart Scenario A bank with 112 branches and 550 teller stations has chosen to use Microsoft Terminal Services for the teller stations and load balancing on the servers that support...

Ngày tải lên: 21/12/2013, 06:16

... Another possibility is to search or post to the Samba mailing lists, which are given at the end of appd-34717, and on the Samba home page Most compilation issues are system specific and almost always ... support for DFS, a later version of AFS, used by OSF/1 (Digital Unix) Note that this is not the same as Microsoft DFS, which is an entirely different filesystem Again, we recommend compiling Samba ... between nodes Incidentally, Microsoft has announced that Kerberos 5.0 will be the standard authentication mechanism for Microsoft Windows 2000 (NT 5.0) However, the Kerberos 5.0 authentication mechanisms...

Ngày tải lên: 21/01/2014, 07:20

... section to your standard Unix startup scripts This varies depending on whether you have a BSD-style Unix system or a System V Unix 2.5.2.1 BSD Unix WIth a BSD-style Unix, you need to append the ... the Samba daemons on system boot 2.5.2.2 System V Unix With System V, things can get a little more complex System V typically uses scripts to start and stop daemons on the system Hence, you need ... username/password combinations of those users on the Unix server who should be able to access shares into Samba's encrypted client database For example, if you wanted to allow Unix user steve to access...

Ngày tải lên: 21/01/2014, 07:20

... 11: System Services Module Strategy Use the following strategy to present this module: ! Introduction to System Services The purpose of this section is to introduce students to the system services ... COM+ applications will use the system services, you should put as few barriers as possible between the other layers and the system services 12 Module 11: System Services One barrier is the process ... 11: System Services iii Instructor Notes Presentation: 75 Minutes Lab: 30 Minutes This module provides students with an introduction to system services This module focuses on the system services...

Ngày tải lên: 24/01/2014, 10:20

... Note: All of the IRD functions require z/ OS to be running in z/ Architecture mode In this book, any time we mention z/ OS, we always mean z/ OS running in z/ Architecture mode, unless otherwise specifically ... A R m o d e z /9 0 P ro c e s s o r to L o g ic a l P a rtit io n s V M / E S A L I N U X z / O S O S / z / O S O S / L I N U X O S / z / O S z / O S O S / O S / z / O S z / O S z / O S © 0 I ... using CPs (as opposed to IFLs) This support will be delivered with z/ OS 1.2 Be running on an IBM zSeries 900 This new capability is only available on IBM zSeries 900 CPCs z/ OS running on an IBM...

Ngày tải lên: 17/03/2014, 18:20

... specialized systems generally interact with the application, but not UNIX itself It is very possible that many users of UNIX systems not actually know they are using UNIX, because their view of the system ... a UNIX system administrator does, and you’ll see not all of those duties are technical So to start at the most basic level, you want to know what UNIX is 1.1 Uncover the History of the UNIX System ... File System Checking the New File System Mounting UNIX File Systems Unmounting a UNIX File System...

Ngày tải lên: 24/04/2014, 09:20

... Additional Reading Chapter 15 POSIX IPC Section 15.1 POSIX:XSI Interprocess Communication Section 15.2 POSIX:XSI Semaphore Sets Section 15.3 POSIX:XSI Shared Memory Section 15.4 POSIX:XSI Message Queues ... in the behavior of library functions across platforms Most popular UNIX versions (including Linux and Mac OS X) are rapidly moving to support the base POSIX standard and various levels of its ... brief overview of how operating systems work and summarizes the operating system standards that are used in the book 1.2 Time and Speed Operating systems manage system resources: processors, memory...

Ngày tải lên: 14/06/2014, 18:21

... engineering cost of modifying a GPOS kernel to run as a RTOS task is reasonably small, the engineering cost for supporting various combinations of RTOS kernels and GPOS kernels is problematic Adeos [22] ... of OSs According to EURASIP Journal on Embedded Systems (1) (2) GPOS tasks GPOS ISR RTOS tasks RTOS ISR SPUMONE Interrupt for GPOS Interrupt for RTOS Figure 2: Interrupt delivery mechanism these ... interface by a single version of an OS kernel, modern embedded systems use multiple versions of OS kernels: typically a RTOS kernel and a GPOS kernel in one device The most simple approach of accommodating...

Ngày tải lên: 21/06/2014, 11:20

... the chaos that can result from so many systems With it, you can deploy systems identically every time, restore systems to a known good state, and implement changes reliably across all systems ... Authors NATE CAMPI is a UNIX and Linux system administrator by trade, currently working as a UNIX operations manager in San Francisco His system administration experience is almost entirely with companies ... host at your site, from installation through production service to system retirement, without logging in and making manual changes to the host Instead, we’ll configure the hosts via imaging systems...

Ngày tải lên: 13/08/2014, 04:21

... make sure your Domain Name System (DNS) is properly configured for your hosts Each host should have a hostname, and a DNS lookup of that hostname should return that host’s IP address In addition, ... second host, not the first host That second host might have been configured to forward connections anywhere—including untrusted hosts So, prudent users forward their agents only to specific hosts ... software you can use to automate changes on UNIX (and UNIX- like) systems It is a high-level language that describes system state, not a general-purpose programming language such as Perl or a shell...

Ngày tải lên: 13/08/2014, 04:21

... Next, you can specify an optional list of hostnames If some hostnames are specified, only those hosts will be contacted If no hosts are specified, every host in the file will be contacted After ... FAI client system Once again we find ourselves in need of a host, in order to configure other hosts Our cfengine master system (named goldmaster) will function as our FAI installation host ฀ ฀ ฀ ... remote system After the second is an optional list of classes If some classes are specified, only hosts that match one of these classes will execute (although each host is contacted because each host...

Ngày tải lên: 13/08/2014, 04:21

... Creating the postinstall Script ฀need to customize our system after the JumpStart installation is complete, but before the host boots for the first time In many JumpStart scenarios, the system doesn’t ... a rule for each system or group of systems on ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ to the system being installed A file entry can match a profile to a system based on the system s hostname or hardware ... infrastructure services, with almost all of our activity actually taking place on the cfengine master instead of on the hosts running those services ฀ 159 CHAPT ER Automating a New System Infrastructure...

Ngày tải lên: 13/08/2014, 04:21

... list the local zones that this BIND instance will load and serve to clients These can be zone files on local disk, zones slaved from another DNS server, forward zones, or stub zones We’re simply ... total system failure on the host etchlamp, you can simply reimage a new host with the same hostname and bring it back onto the network as a DNS server This is exactly what we want of all hosts ... administrators: Here you’ll recognize the standardized files we created earlier C HA P TER ฀ AUTOMATING A NEW SYSTEM INFRASTRUCTURE The keyword in these stanzas adds file-size minimums for the , , and...

Ngày tải lên: 13/08/2014, 04:21

... installed on both the remote and local systems to synchronize data between those systems Possible Uses of rsync You’ll find rsync very useful for synchronizing applications and their data You could, ... our end systems You have several options to accomplish the task of configuring systems across the site to utilize the mail relay For example, you can configure Sendmail, qmail, and postfix in ... records for relayhost.campin.net, so that the load is shared between the two An additional benefit of having two hosts serving in the “relayhost” system role is that if one host fails, mail will...

Ngày tải lên: 13/08/2014, 04:21

... for Nagios to perform service/host checking at all, making for two monitoring system components right away Most sites also deploy the Nagios ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ add-on) or the Nagios At ... download from the Nagios web site Through the use of plug-ins, Nagios becomes a true monitoring system, as the plug-ins check and report on the availability of hosts and services Nagios really only ... complete list of Nagios object types: ฀ ฀ Hosts: Hosts contain definitions of hosts or devices These are usually physical machines, but they might be virtual systems as well Nagios doesn’t know or...

Ngày tải lên: 13/08/2014, 04:21

... create a Debian i686 host, since that’s what we use for most of our system roles at this point Here are the summarized steps to create the new Debian host: Add entries for the new host to the DNS We ... ING Monitoring Remote Systems So far, we’re simply using the example configuration included with Nagios to monitor only the system that is actually running Nagios To make Nagios generally useful, ... monitoring hosts It grants access to remote hosts to execute plug-ins such as those in the Nagios plug-ins distribution NRPE has two components: a daemon called and a plug-in to the Nagios daemon...

Ngày tải lên: 13/08/2014, 04:21

... on our systems ฀ IMPROVING SYSTEM SECURITY CHAPTER 12 Protecting System Accounts system accounts are commonly used for brute force login attempts to systems Every day, lists of common system ... all of your systems, so installing a consistent shell across your systems is a good place to start Caution Some systems, such as Solaris, always use when executing system initialization scripts ... IMPROVING SYSTEM SECURITY ฀ ฀ ฀ daemon) The daemons and processes on the local system that connect to services on remote hosts will be allowed by our policy, as well as any return traffic for those...

Ngày tải lên: 13/08/2014, 04:21