rhcsa rhce

top or PS have a PRI item, what is the relationship between this value and NI value? We can understand that a PRI value is a mapped NI value, and the PRI and NI values affect the priority of process execution. Priority/pri is dynamically adjusted by the OS kernel, the user cannot adjust (the lower the PRI value, the higher the priority of the process execution); Nice/ni users can adjust themselves; correlation: There is a general formula, PRI (new) = PRI (old) + NI; however, PRI is the OS dyna

Oracle 9i installation with all the steps I have described? Maybe some of the readers are feeling a bit overwhelmed! In fact, Oracle databases are really complex in the public library, not only the installation system's step-by-step trivial, the management technology of the library is extensive and profound! But also because of this, the value of the post-Oracle data library is really different. From the beginning of the next issue, I'll start with the basic Oracle Library usage and officially

ObjectivesUpon completion of this unit, your should is able to:explore further opportunities in Red Hat Enterprise Linux usage descr Ibe other Red Hat training offerings participate in the Linux community Some Areas to Explore1) Development 2) System Administration 3) Further training opportunities 4) the Linux Community DevelopmentRHEL includes serveral languages 1 Compiled languages:c, C + +, Java, Assembly, Fortran 2) interpreted Languages:bash, Perl, Python, PHP, Ruby, Lisp/scheme 3) Program

Chapter Overview:The MySQL database management system was changed from open source to closed by Oracle, resulting in the selection of MARIADB for many Linux distributions, including Red Hat. This section will teach you to use MARIADB database management tools to manage your database and learn about common operations such as creating, searching, updating, inserting, and deleting data forms. and proficient in database user creation and authorization, database backup and recovery methods, not only

Tags: catalogue conf help style pad CTO It's auto-completeFirst, the history of Gnu/linuxRichard M.stallman, father of free softwareLinus, Torvalds?Gun:gnu is not UnixGPL: White Paper ProtocolSecond, the Linux distribution version RHELRHEL is the acronym for Red Hat Enterprise Linux and is Red Hat's Linux system. 2.Centos3.ubuntu4.SUSE5.Debian6.ARACLEThird, Linux related certification introduction RHCE/RHCAIv. Deployment of Linux Systems

Tags: char type val computer img SuSE GPL CTO FFFFFFRichard M. Stallman (father of Freedom Software) 1984 GNU Copyleft opensource free GPLLinus Torvalds (father of Linux) (Linus Benedict Torvalds, 1969 ~), a famous computer program clerk, Hacker. The inventor of the Linux kernel and the partner of the program. Torvalds uses personal time and equipment to create one of the most popular operating system (OS) cores in the world today. is currently employed in the Open Source development lab (Osdl:o

Use tar and cron to regularly back up data-Linux Enterprise Application-Linux server application information. The following is a detailed description. Http://blog.fedorachina.cn/linux... using_tar_cron.html I was shocked to accidentally delete a system configuration file under/etc! I am not used to setting alias rm = 'rm-I 'in bashrc, because it is annoying to delete many things. Although rm only deletes a file from an entry, the file is still on the disk and can be retrieved before it is overw

sufficient for self-Support, Why purchase such expensive Support? It is completely legal to use RHEL. In fact, Oracle's so-called Unbreakable Enterprise Linux is to change the RHEL, and then sell Compatiable subprocessor at a low price (despise), see: http://en.wikipedia.org/wiki/Oracle_Enterprise_Linux Of course, Red Hat has made great efforts for the development of Linux. The Red Hat Enterprise Linux series they provide are better than similar products, both functions and performance are grea

As the old saying goes, RedHat recommends the kernel compilation method-general Linux technology-Linux programming and kernel information. The following is a detailed description. Author: Ma luyao This article is taken from the RH300 (RHCE Rapid Track Course) textbook. This article assumes that you are using Redhat 7.2 and started with grub management. Prepare to compile the kernel that comes with 7.2. Cd/usr/src/linux-2.4 Make mrproper Edit

/. * GSSAPIAuthentication yes/GSSAPIAuthentication no/'/etc/ssh/sshd_config/Etc/init. d/sshd restartCat> $ HOME/. bash_profile Export PATH =/App/script: \ $ PATHEOFMkdir-p/App/script/App/srcMount -- bind/dev/shm/tmpEcho "/bin/mount -- bind/dev/shm/tmp">/etc/rc. local 5. Check the listening ports of related services Http: 80, dhcp: 67, tftp: 69 Netstat-tunlp | grep-E '(0.0.0.0: 80 | 0.0.0.0: 67 | 0.0.0.0: 69 )' If the service is monitored Basic Linux Tutorial: Automatic Installation of Linux Kic

Precautions for unattended installation of multiple NICs in PXE The PXE unattended installation of Linux configuration is not mentioned here. Read this article and write it in detail. I am here to make a supplement. The following problems may occur sometimes when multiple NICs exist, as shown in the figure below. At this time, it will be stuck here. If you need to manually select it, we have to modify it. It may be ks at first. cfg. cfg/default file Label linux Menu label ^ Install or upg

Linux troubleshooting example (1)-Linux general technology-Linux technology and application information. The following is a detailed description. During the RHCE certification training for trainees, we have provided a number of examples on how to troubleshoot errors. Here we will share with you: 1. MBR damaged or lost Enter rescue mode Check the grub. conf file to ensure the file content is correct. Grub-instll/dev/had 2. the grub. conf file is incor

prefer to understand the nature of the operating system and use our own optimized and customized systems.Is it a Linux system or a Windows system to do operation and maintenance?Many students ask me, learn Linux good, or learn Windows good. This problem is not a good answer, because in terms of enterprise demand, Windows and Linux Server enterprises can be used, but Linux relies on security and stability of the application, making it in the Enterprise Server domain has been a great advantage, a

. 5. After reading the rhce video tutorial, let's see how far it will take. In the future, I will try to minimize the number of packages that can be uninstalled and how much linux can be simplified. The most correct way to learn about linux this time is to minimize installation and start from source code compilation, so that you can get familiar with more software. Today, I saw a friend talking about linux. When you use linux for a long time, the f

Linux video tutorial-general Linux technology-Linux technology and application information. For more information, see the following section. I just downloaded a video tutorial about rhce, which is really not very picky. If you can read it books in China, it is basically translated. In the past, I learned about windows. The books in the series are the most classic. In terms of linux, it seems to be basically the same. It's not easy to watch these

I would like to share my thoughts on RHEL5-Linux general technology-Linux technology and application information. The following is a detailed description. After installing RHEL5, I started all the services during the installation. I can see that the memory reaches MB and the graphic interface is included. However, it seems a little higher than ubuntu, but it is applicable to enterprise security after all. The 2.6 kernel is used, but the NTFS partition is not supported by default. Ins

Create a lun,10g. Create a LUN group, named Rhce, and add the LUN to the LUN group. /etc/iscsi/initiatorname.iscsi[[email protected] iscsi]# cat Initiatorname.iscsi initiatorname= iqn.1994-05.com.redhat:3dfb14784b4bIf you change the name, you need to restart the iSCSI serviceiSCSI Connectivity: 1) found. 2) connection# iscsiadm-m discovery-t st-p 12.12.13.1 #发现 #-t ST: sends a target to the peer server (storage device), which contains the sender's inf

old boy education 51cto online class 3 -3 answers -2016 year ( month ) question 1, What is the difference between learning Linux and learning operations? Solution: Linux is a narrow system, operations include not only linux+ network services +shell+ cluster AH.Linux operations, do not say learning Linux, learning Linux (RHCE certification), mainly Linux. The services and software involved are much less.question 2: is it a little early for the teache

Configure a range of IP Under Linux, configuring multiple IPs is usually eth0.0. eth0.1.. eth0.x and so on, then if you want to configure a large number of IP, so configuration is also possible, but cumbersome, although this situation is very small.For the addition of a large number of IP, there are certain provisions, the Rhce/centos system provides a fast way to bind an IP range so that we no longer need to create a large number of files, save time

, the job is mainly dealing with people, things are much more miscellaneous, work to February 14, feel I have to enrich themselves, then in Wuhan local training institutions enrolled in the Redhat training courses, formal system to receive training, Because it is the weekend class, usually a lot of things, resulting in learning effect is not very good, has been dragged to the resignation of April this year to attend training, in May exam by obtaining RHCE