Linux

During the weekend, QT was installed in the CentOS Linux system. It took two days to complete the installation... record the ups and downs... my system is CenttOS5.5. Specific installation methods: 1. Download Qt 4.5.3 for X11 OpenSource. 2.

When we use VMware to install a virtual machine, after the configuration is complete, VMware always automatically installs the system for us and cannot perform some manual customized operations. The most typical is when installing the Linux system,

Download jdk http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html. Shared directory Copy the jdk file in the shared directory to the/tmp directory for installation. Cp, mnt, hgfs, linuxsoft, jdk-7u21-linux-i586.rpm,

Debian version View cat/etc/debian_version Debian supports vers = 4 by default, but earlier CentOS versions support vers = 3 by default. Therefore, the following message is displayed when NFS is mounted: NFS: bad mount option value specified:

Recently, vmserver was deployed to facilitate management of hosted servers. The db server is intended to be deployed in linux. Currently, Ubuntu is used. After the server version is installed, the system is dumb-eyed and full-command-line... So

RedHat Linux GConf error Solution Problem: Accidentally executed: # chmod-R 0777/tmp, resulting in GConf error: Failed to contact configuration server after re-entering Redhat; some possible cause are that you need to enable TCP/IP networking for

Linux system Timed Shutdown Shutdown command Parameters: -C: cancel the previous shutdown command. -F does not execute fsck upon restart (Note: fsck is a program for checking and repairing the file system in Linux ). -F: Execute fsck when

Linux temporarily adds swap space: Step 1: # Dd if =/dev/zero of =/home/swap bs = 1024 count = 500000 Note: of =/home/swap: place the swap space. The size of count is the size of the added swap space, and the size of 1024 is the block size. Here it

Iptables default three tables:• Filter: Firewall, including INPUT, OUTPUT, and FORWARD• Nat: Network conversion, including PREROUTING, POSTROUTING, and OUTPUT• Mangle: Traffic Shaping, including all five chains Five Links in iptables-> where to

Consider the following scenario: A file.txt file in the home directory of foouser needs to be copied to the home Directory of the bar user. Linux has strict permission restrictions on the user's home directory. Non-owner users or users in the same

It is almost certain that everyone has heard of SELinux (more accurately, tried to disable it), and even some past experiences have caused you to be biased against SELinux. However, with the increasing 0-day security vulnerability, it may be time to

When yum update is executed in CentOS 6.2, the following error is returned: Setting up Update ProcessResolving Dependencies--> Running transaction check---> Package openmpi. x86_64. 5.3-3. el6 will be updated--> Processing Dependency: libotf. so.0 ()

1. Advanced permission mechanism, allowing flexible and complex permission settings for files or foldersThe most important Entry tag type, which has the following types:ACL_USER_OBJ: equivalent to the permission of file_owner in LinuxACL_USER:

As we all know, there is no recycle bin concept in linux. Once the rm command deletes a file, it cannot be found. But in fact, there is still a saving problem. Previously, I knew a concept and a saving problem, but I didn't know how to save it in

The process is as follows: I am a linux hacker. I just started to learn this. Because the company's network environment does not allow downloading, I accidentally used CentOS and summarized my understanding as follows (red part) 1. First, uninstall

1. for Ubuntu Internet access problems, I used ruijie. Just install mentohust and set it. 2. We have installed GCC for Ubuntu 10.10, but G ++ is not installed. Therefore, we need to install G ++ on our own, as long as you enter: sudo apt-get install

Function Description: Uses scripts to process text files. Sed can process and edit text files according to script instructions. Introduction: sed is an online editor that processes a row of content at a time. During processing, the currently

Google analytics is required for work. In Ubuntu, goAgent is configured, but the google analytics page is blank. In the past, I also encountered Windows 7 in the company. I checked the information and said it was an SSL link problem, but it has not

In Linux, you can use the Network Time Protocol (NTP) to keep the system accurate over the Network. NTP is a Protocol used to keep the system synchronized with a precise Time source. The best way is to create at least one time server in your managed

Vi is a commonly used text editing method in Linux, just like using txt in Windows. Of course, you can use the mouse in Windows, but in the Linux server System (the server does not select the interface), we have to use commands to provide us with a