Linux

EnvironmentCvsroot:/home/cvsrootCheckout module: Test Error MessageThe following error is reported during checkout:CVS server: failed to create lock directory for '/home/cvsroot/Test & apos; (/home/cvsroot/test/# cvs. Lock): Permission deniedCVS

In "How to Implement Nat smoothly in Linux", I introduced how to enable Nat to take effect instantly in Linux, and mentioned that the patch was only tested in the SNAT environment, I have not tested it in the DNAT environment. In fact, it can also

  VI/etc/sysconfig/network-scripts/ifcfg-eth0 Configuration parameters in the ifcfg-eth0 Hwaddr = MAC address, not required Bootproto = set the method for obtaining IP addresses, static IP addresses, and dynamic DHCP Retrieval Onboot = Yes boot

  Go to the dev directory: CD/dev Check whether CDROM exists: ls Create a mount point under/mnt, for example: CD/mnt Mkdir CDROM Last Mount Mount/dev/CDROM/mnt/CDROM The content of the CD will be mounted to/mnt/CDROM.   First create a

InProgramWhen an unusual exit occurs, the kernel will generate a core file (a memory image with debugging information added) in the current working directory ). Use GDB to view the core file, which indicates that the program may fail.CodeFile and

The Select system call enables our program to monitor the State Changes of multiple file handles (file descriptor. The program stops at select and waits until one or more of the monitored file handles change their status. There are many file handles

From http://www.gbunix.com/htmldata/2005_01/1/3/article_1079_1.html   Linux Remote Control Method Overview - There are several methods:1. rlogin, RSH, and other R-series

Background When there are too many servers, it is a big problem whether the time is accurate or not. Although this problem is always ignored, it is necessary to unify the time. The following describes how to configure the Linux time server in the

I originally wanted to implement a Cisco-style Linux version ACL last weekend, that is, to bind the rule to the interface instead of the hook point. However, I found that the private data of net_device is very difficult to use, so I got my work

Because of the asymmetry of the implementation complexity of the layer-4 protocol, it is difficult to unify the implementation of the layer-3 Protocol. In other words, the same layer-3 Protocol, for example, IP addresses must provide different

Directory 1. What is a segment error?2. Why is a segment error so "troublesome "?3. What are the common errors in programming?4. How can I find and handle segment errors in the program? Body 1. What is a segment error? The following is the

Environmentsuse linuxnovell ZENworks 11 Configuration Management Support Pack 1-zcm 11 SP1 Novell ZENworks Configuration Management 11.2 situationerror on sles while running chkconfig after Sun Java install: insserv: script jexec is broken:

Method 1: Modify the/etc/profile fileAll users' shells have the right to use these environment variables. execute the command on the shell terminal: VI/etc/profile Add the following content to the end of the profile file:Java_home =/usr/lib/JVM/Java-

  Interrupted kernel implementation I. interrupted use The Linux kernel needs to manage all the hardware devices connected to the computer, which is undoubtedly part of it. To manage these devices, you must first communicate with them. Generally,

When we introduced the segment mechanism earlier, we mentioned that the x86 segment mechanism converts the logic address of the program into a linear address. The paging mechanism here is to map the linear address into a physical address, in other

  In the Linux kernel with USB touch screen driver, linux-2.6.33.3 \ drivers \ input \ touchscreen. C as an example, the analysis: 1. Driver loading: Static int _ init usbtouch_init (void){Return usb_register (& usbtouch_driver); // driver

I. Explanation of DD commandsDD: Use a block of the specified size to copy an object and perform the specified conversion at the same time. Note: If the following column ends with a specified number, multiply it by the corresponding number: B = 512;

  Delayed execution A device driver often needs to wait for a while to execute code for a specific segment, and often allows the hardware to complete a task. Long latency Sometimes, the driver needs to delay the execution for a relatively long time,

Address type: 32-bit CPU, 4G space in total, 0-3G belongs to the user space address, 3G-4G is the kernel space address. User Virtual Address: user space program address Physical address: Address used between CPU and memory BUS address: the address

I have been in the Hall of Linux for more than a year. Here I want to analyze the various implementation mechanisms of Linux. On the one hand, it is also a warm story for myself, and on the other hand, it will promote communication between everyone,