UNIX system administration ( frank g fiamingo) phần 4

... when nothing else is happening [UNIX internal] Memory page manager [UNIX internal] Swap space manager Clock daemon Error logging daemon Process control initialization System message log daemon ... ignores modem signals (default) Line recognises modem signals Line can be used for incoming and outgoing connections (off by default) Line will open with System V default termio attributes (by...

Ngày tải lên: 04/12/2015, 06:43

... (goldmaster.campin.net) and our Red Hat Kickstart system (rhmaster.campin.net) as the two systems that sync to an external NTP source Note There is no reason to choose Linux over Solaris systems to handle this ... , and we set up two filesystems and a swap slice : The keyword is required in every profile Besides , other possible values for that keyword include and for upgrades an...

Ngày tải lên: 13/08/2014, 04:21

... a file system and the system which the file system will be made available to? A Mount B Partition C Format D fdisk 196 UNIX System Administration: A Beginner’s Guide Mastery Check To create a ... User_Alias Runas_Alias Host_Alias Cmnd_Alias Defines a list of users that can (or can’t) execute a specific command Defines a username to run a specific command Defines...

Ngày tải lên: 13/08/2014, 04:21

... Useful examples: UNIX has two historical ‘flavours’: BSD (Berkeley Systems Development, from the University of California at Berkeley) and System V One of these is the same as AT&T UNIX, but I can’t ... /etc/lcp ] && { /etc/lcp -s -v discovery -V ”South Kent College DECsystem 5000/ 240 ” -h /dev/tty33,/dev/tty16,/dev/tty15,/dev/tty 34 & echo ’LAT ’ > /dev/console } For explanation of th...

Ngày tải lên: 13/08/2014, 04:21

... (goldmaster.campin.net) and our Red Hat Kickstart system (rhmaster.campin.net) as the two systems that sync to an external NTP source Note There is no reason to choose Linux over Solaris systems to handle this ... , and we set up two filesystems and a swap slice : The keyword is required in every profile Besides , other possible values for that keyword include and for upgrades an...

Ngày tải lên: 14/08/2014, 02:20

... Select File->Exit 118 Chapter Network Administration Configuring Basic Network Services (Tru 64 UNIX) Configuring Basic Network Services (Tru 64 UNIX) The Tru 64 UNIX Network Setup Wizard enables you ... list Chapter 133 Network Administration Configuring Basic Network Services (Tru 64 UNIX) 24 Select Next> The Summary dialog box opens 25 Select Finish 1 34 Chapter Network Adm...

Ngày tải lên: 14/08/2014, 02:21

... root root root root root root root root root root system system system system system system system system system system system system system system system 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, ... usr/lib/ system 8192 May 23 1995 mdec/ system 8192 Jul 25 1995 mnt/ system 8192 May 23 1995 opt/ system 2 744 0 Jul 24 1995 osf_boot* system 82 24 Jul 12 11:08 proc/...

Ngày tải lên: 14/08/2014, 02:22

... or retrieval system, without the prior written permission of the copyright owner and the publisher ISBN -13 (pbk): 978 -1- 4302 -10 59-7 ISBN -13 (electronic): 978 -1- 4302 -10 60-3 Printed and bound in ... quietly and automatically from within a standard UNIX or Linux system Automation is already a core part of UNIX philosophy, and cron jobs have historically been the de fac...

Ngày tải lên: 13/08/2014, 04:21

... server could map port 23 on that router to port 23 23 on some other system: Once you run this command, you will actually have an interactive login session on the destination system As long as that ... master push system expects a Linux host to be running at the remote IP address When such systems boot into Linux again, cfengine will copy the latest configuration files to the syste...

Ngày tải lên: 13/08/2014, 04:21

... example: On all systems, the command is executed to synchronize the system s clock Cfengine terminates this command in 30 seconds if it has not completed On systems running Red Hat Linux, a script ... master, system upgrade, and patching procedures is easy before the systems and procedures are put into use Once you’ve been deploying and updating systems using automated means, reorg...

Ngày tải lên: 13/08/2014, 04:21

... ฀ ฀ and On Solaris, the files are and The and files map filesystem paths to files that contain the commands to mount a remote share at that path The and files have the actual mount commands ... handles routing, Network Address Translation (NAT), and DNS-caching services After we get DNS up and running on one or more of our UNIX systems, we’ll have cfengine configure the rest of...

Ngày tải lên: 13/08/2014, 04:21

... same applications and data from multiple systems You can modify the files on any system, and the changes become instantly available on all other systems Problems with network filesystems begin to ... this command runs, the remote system will have exactly the same files in its directory as the local system no less, and no more Don’t forget that rsync works equally well when the sourc...

Ngày tải lên: 13/08/2014, 04:21

... software has bugs; and all manner of issues crop up that cause hosts and applications to fail System and service monitoring is automation’s companion tool, used to notify us when systems and applications ... grows ฀have chosen Nagios for our system and service monitoring system Nagios is flexible and mature, and help is widely available on Internet mailing lists and news...

Ngày tải lên: 13/08/2014, 04:21

... MERGING CRASH COURSE Most system administrators are familiar with the and commands The command is used to compare text files line by line and show the differences The command takes a file containing ... back and 337 3 38 C HAPTER 11 ฀ IN FR A S TR U C TU R E ENHA NC EMENT automate the setup of our imaging systems as much as possible and then only back up Subversion The automation o...

Ngày tải lên: 13/08/2014, 04:21

... the system to full functionality CHAPT ER 12 Improving System Security E arly in this book, we established that managing the contents and permission of files is the core of UNIX /Linux system administration ... on our systems ฀ IMPROVING SYSTEM SECURITY CHAPTER 12 Protecting System Accounts system accounts are commonly used for brute force login attempts to systems Every d...

Ngày tải lên: 13/08/2014, 04:21