Sair Linux and GNU Certification Level 1, System

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Language: English

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Part One: System and Network Administration Defined. Other places to get information about your monitor include your Microsoft Windows setup, your system’s Windows driver, your computer vendor’s Web site, or the Norton System Information tool. But the minute a user decides on a different wallpaper image or adds an application that was acquired apart from the machine itself, he or she has taken on the mantle of system administration. N fstype [1] — Sets the file system type for the RAID array.

Pages: 512

Publisher: Wiley; 1 edition (September 8, 2000)

ISBN: 0471369764

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Listing 5-13 shows how chkconfig can be an effective tool for handling all your network services and controlling which ones get started up at boot time. This is the output of chkconfig --list: Chapter 5: Red Hat System Configuration Files Listing 5-13: Output from chkconfig --list atd rwhod keytable nscd syslog gpm kudzu kdcrotate lpd autofs sendmail rhnsd netfs network random rawdevices apmd ipchains xinetd based services: rexec: rsh: off off off off off off off off rlogin: off chargen: chargen-udp: daytime: daytime-udp: echo: time: off off echo-udp: time-udp: finger: off ntalk: talk: off off on off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off 1:off 1:off 1:on 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 1:off 2:off 2:off 2:on 2:off 2:on 2:on 2:off 2:off 2:on 2:off 2:on 2:off 2:off 2:on 2:on 2:off 2:on 2:off 3:on 3:off 3:on 3:off 3:on 3:off 3:on 3:off 3:on 3:on 3:off 3:on 3:off 3:on 3:on 3:on 3:off 3:off 4:on 4:off 4:on 4:off 4:on 4:off 4:on 4:off 4:on 4:on 4:off 4:on 4:off 4:on 4:on 4:on 4:off 4:off 5:on 5:off 5:on 5:off 5:on 5:off 5:on 5:off 5:on 5:on 5:off 5:on 5:off 5:on 5:on 5:on 5:off 5:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 6:off 119 telnet: off wu-ftpd: rsync: off eklogin: gssftp: off klogin: off 120 Part I: Red Hat Linux System and Network Administration Defined To turn a service off or on using chkconfig, use this syntax: chkconfig servicename off Each of the following subsections discusses a useful file system command that every system administrator should know about, and what they do. ls is probably the most commonly used Unix command Smart Home Automation with Linux and Raspberry Pi Smart Home Automation with Linux and. In general, it's best if round-trip times are under 200 milliseconds. The time it takes a packet to reach its destination is called latency. If you see a large variance in the round-trip times (which is called "jitter"), you are going to see poor performance talking to the host NSLOOKUP is an application that facilitates looking up hostnames on the network $60K Jobs: The UNIX Administrator $60K Jobs: The UNIX Administrator.

To see the collection of prior posting to the list, visit the lpi-manuals-devel archives. To post a message to all the list members, write to lpi-manuals-devel at nongnu dot org You can (un)subscribe to the list by following instructions on the list information page. lpi-manuals-news - Information and Announcements on lpi-manuals. To see the collection of prior posting to the list, visit the lpi-manuals-devel archives ref.: The Debian Administrator's read here The following examples first show the current system and hardware time, then updates the hardware clock to the system time using the -w option: # date Sun Jul 8 19:15:50 MDT 2001 # hwclock Sun 08 Jul 2001 07:15:49 PM MDT # hwclock -w 0.067607 seconds Chapter 18: Configuring the System on the Command Line # hwclock Sun 08 Jul 2001 07:16:03 PM MDT 493 0.899255 seconds Note that after syncing the hardware clock to the system clock, the hardware clock gained approximately 14 seconds (of course, some time elapsed while the commands were typed) Pro Linux High Availability Clustering download online.

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Yeah it happens doesn’t mean you need to replace hardware. I actually had to explain to someone that he didn’t need to replace his DVD-rom because it have hard errors on it Fedora 12 Security-Enhanced download pdf A distributed search sends queries to group members Ubuntu 9.10 Installation Guide Linux does have viruses that are made to specifically attack its platform however the number of viruses Linux have pales in comparisson to the amount Windows have. This make it easier and faster for the Linux community to fix compared to waiting for Microsoft updates. Another common problem is the cross over of platforms, some individuals prefer the use of Linux/Mac so their personal computers/laptops has it installed however their work place may be using Windows, this is where the problem starts Linux Routers: A Primer For Network Administrators Debian and Red Hat represent both sides of Linux and open source. Debian has many offspring, including the popular Ubuntu. Debian doesn't come packaged with a lot of fancy doodads, but it is a mighty power tool in the right hands , e.g. Guide to Linux Networking and Security Guide to Linux Networking and Security. The only reason to change this option to no is if you are going to run atalk manually from the command line. After you have configured the settings in the /etc/atalk/config file, you can edit the configuration files for the various daemons: atalkd, papd, and afpd. The atalkd program reads its configuration from /etc/atalk/atalkd.conf. A sample version of this file is automatically installed by the RPM Instant Chef Starter read online read online. The Korg OASYS, the Korg KRONOS, the Yamaha Motif XS /Motif XF music workstations, [114] Yamaha S90XS/S70XS, Yamaha MOX6/MOX8 synthesizers, Yamaha Motif-Rack XS tone generator module, and Roland RD-700GX digital piano also run Linux. Linux is also used in stage lighting control systems, such as the WholeHogIII console. [115] There had been several games that run on traditional desktop Linux, and many of which originally written for desktop OS ref.: Learn Linux in a Month of read here

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Next, change directories to the directory in which you downloaded the source files and execute the following commands, again as the root user, to verify the file signature: $ gpg --verify linux-2.4.8.tar.bz2.sign linux-2.4.8.tar.bz2 gpg: Signature made Fri 10 Aug 2001 10:21:01 PM MDT using DSA key ID 517D0F0E gpg: Good signature from “Linux Kernel Archives Verification Key ” gpg:), the file is authentic DB2 Universal Database V8 for download pdf DB2 Universal Database V8 for Linux,. TCP/IP and its protocol family are fully described in Chapter 4, Overview of TCP/IP. The term local-area network (LAN) refers to a single network of computers limited to a moderate geographical range, such as the floor of a building or two adjacent buildings Extending Puppet - Second Edition If, for some reason, you have to add the AddType text/html .shtml and AddHandler server-parsed .shtml directives to the httpd.conf file, the server must be restarted to make them take effect Linux Networking Architecture by Klaus Wehrle (2004-05-09) The enhanced /etc/ftpaccess file Listing 13-4 shows an /etc/ftpaccess file, judiciously commented, after applying the changes and additions discussed in this section. It is available on the accompanying CD-ROM in this chapter’s source code directory as ftpaccess.better. Listing 13-4: A Better ftpd Configuration File # Deny system and special accounts deny-uid %-99 %65534deny-gid %-99 %65534# Permit access to the ftp user allow-uid ftp allow-gid ftp # Define a class named all for convenience class all real,guest,anonymous * # Only 5 attempts to login loginfails 5 # Don’t let anonymous do anything dangerous chmod no guest,anonymous delete no anonymous overwrite no anonymous rename no anonymous umask no anonymous # Force anonymous to provide a password that # at least looks like a valid email address passwd-check rfc822 enforce # Connections from remote hosts must be running # a properly configured name server deny !nameserved no-dns.msg dns refuse_mismatch dns-mismatch.msg dns refuse_no_reverse dns-no-reverse.msg # Don’t let the system get bogged down limit all 10 Any too-many-users.msg Chapter 13: Configuring FTP Services # The FTP administrator’s email address email root@localhost # What messages do users see and when do # they see them? readme README* login readme README* cwd=* message /welcome.msg login message .message cwd=* shutdown /etc/shutmsg # Severely restrict the display of system # information to script kiddies and other vermin greeting terse signoff terse stat terse # Log information to the transfer log and to the # system log about file transfers logfile /var/log/xferlog log syslog+xferlog log transfers anonymous,guest,real inbound,outbound # Log commands and security issues in the system log log commands anonymous,guest,real log security anonymous,guest,real # Let users compress and tar files on the fly compress yes all tar yes all # Notify someone about all file uploads, especially # from the anonymous FTP user. # Uncomment these if you permit file uploads on the # server , e.g. Ansible for DevOps: Server and download here Enter your email address to subscribe to this blog and receive notifications of new posts by email. UNIX is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs LINUX TCP/IP NETWORKING FOR read here

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