1. User ID: UID and GID
Each login user obtains at least two IDs, one being the user ID (UserID, UID) and the other being the group ID (GID ).
Each file has the owner ID and user group ID. When the file attributes are displayed, the system displays
Install and configure JDK 7 in CentOS 6.3
System Environment: CentOS 6.3Installation Method: rpm InstallationSoftware: jdk-7-linux-x64.rpm: Http://www.Oracle.com/technetwork/java/javase/downloads/java-se-jdk-7-download-432154.htmlCheck the original
In Oracle Linux, the size of tmpfs is increased to MB to 3 GB (note: the initial value is half of the memory)
First Change/etc/fstab to change the tmpfs size to 3 GB
Add size = 3G after tmpfs,
OK,/etc/fstab is edited, but OEL is a little
Document declaration: Installation Process on CentOS5.4 desktop. This article is only a personal installation process, where the software configuration scheme is only selected based on personal needs, may not meet all the needs. The configuration
Find command Summary
Real-time
Precision
Supports multiple search criteria
Traversing all the files in the specified directory to complete the search, the speed is relatively slow;
Find path search standard search for future processing
1. Create a Distribution List (Group) aaa@example.com
Note: The creation process here is not described in detail. The key is to pay attention to the settings marked in red below during the creation process.
2. Open the zimbra server terminal
Preface:
Today () I learned the first day of Marco's video. The main content is as follows: Basic Principles of computer composition, basic operating system principles, and basic linux operations, haha, but the most important thing is to write a
Environment: CentOS 6.3
Requirement: The example.com domain is created for internal and external queries. The Intranet environment 192.168.88.0/24, 10.1.0.0/16
1. Install
Yum install bind // chroot Is Not Installed
2. Main configuration
Now the Linux desktop has developed very well, and it is easy to play music on the desktop. Do we still remember how we played music when the desktop was not so good? Ah, I cannot remember it. It's so hard.
But now we can first install a small
To put it simply, install arping in Fedora 18. First download the arping-2.13.tar.gz from the Internet, decompress to your own prepared directory, we compile and install:
Install the following steps in the install document:
Enter the directory
Linux Top commands
View multi-core CPU commands
Mpstat-p all and sar-P ALL
Description: sar-p all> aaa.txt redirects the output content to the aaa.txt file.
Top commands are often used to monitor linux system conditions, such as cpu and memory
Finally, install the Eclipse C ++ environment in Ubuntu 12.04. This is relatively simple. follow the steps below to avoid any problems and basically no configuration is required.
1. Download eclipse for c ++ (it is not recommended to install it on
1. download the required filesNote:1. You must assume the right to give up the official warranty and the risks that the mobile phone cannot work normally. If any problem or fault occurs due to the flash, hammer technology will not take any
It's about to get started with Solaris.
I obtained an ISO Installation File of 2 GB or more solaris10 from my colleagues in the background group.
Start to install solaris on a virtual machine on your computer.
After setting the virtual machine,
The steps for installing the highlighted vim editing tool in CentOS 5.4 are very simple. For Linux experts, please ignore this article. Just a few lines of command !! [Root @ localhost ~] # Yum install vim -* Loaded plugins: fastestmirrorLoading
Recently, I have studied pxe for automatic installation in my company, and I have also referred to a lot of information on the Internet. Here I have made some simple work and I have little skills in text expression, don't shoot bricks.
Preparation:1.
Prohibit remote root login on Aix The extended information of aix users is mostly in the/etc/security/user text file. You can modify:Login = false users cannot log on to the systemRlogin = false users cannot log on to the system remotely.Su = false
If you were using Linux from the very beginning when the DVD came out, you might be a little impressed with how long it took for Linux to support the DVD. Damn it, even now, if you want to watch an encrypted DVD, you have to install additional
CentOS 6.3 installation spf13-vim Process:
Install VIM 7.3 and ctagsCompile and install VIM 7.3 (supporting multibyte and python ):
# Wget ftp://ftp.vim.org/pub/vim/unix/vim-7.3.tar.bz2# Tar jxvf vim-7.3.tar.bz2# Cd vim73#./Configure --
The company's intranet requires 10.0.0.1 gateway to be used within 192.168.0.100 to access the Internet (China Telecom), and other IP addresses to access the Internet through ipv0.0.1 (China Netcom.
First, add a default route on the gateway server.
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