Linux

The type of memory determines the operation and performance of the entire embedded system. Therefore, the selection of memory is a very important decision. Whether powered by battery or mains, application requirements determine the type of memory

The starting and running of each shell, the execution of commands and program mechanisms, how to handle commands and program input and output, and any programming are affected by certain environment variable settings. each system has an initial

Linus left the following content when releasing this kernel: "Are you still worried about Minix-1.1? Are you still writing your own device drivers? Are you frustrated because you cannot find a project that can be freely modified? As I said one

Most users are worried about how to deal with data loss in case of a hard disk failure? In fact, many users will mount more than one hard disk on the host due to hard disk capacity limitations. At this time, if you make these hard disks into a disk

During the running process of a multi-user UNIX computer system, the computing speed may suddenly slow down, and sometimes it may take a long time to even input characters from the keyboard to respond. Experienced people will know that the computer

As a fact standard for Linux products, hidden passwords have been used for many years. However, there are also deficiencies in using traditional hidden passwords, and even md5 is not as secure as before. One disadvantage of the hidden password file

Some Intel FLASH chips (such as the StrataFlash series) support multiple partitions, that is, each partition can be operated simultaneously. It should be said that this is a good feature, but it will also bring some problems. Remember the original

1. Linux is a case-sensitive system. For example, Mozilla, MOZILLA, mOzilla, and mozilla are four different commands (but only the fourth mozilla command is actually valid ). Also, my_filE, my_file, and my_FILE are three different files. User login

1. Overview Before analyzing the implementation of LINUX2.4.x network security, we will briefly introduce several important concepts in LINUX2.4.x: netfilter, iptables, match, target, nf_sockopt_ops, and network security functions. The detailed

Files in Linux have three time attributes. Access time (atime): the time when the file is accessed Modification time (mtime): time when the file content is modified Change time (ctime): the time when file attributes (such as permissions) are

It is inevitable to install some new software after the new operating system is installed. However, in Linux, the installation of application software is somewhat different from that in Windows. For Linux beginners, installing software is a headache.

If you are using Linux, remember not to let the dumb enter the following commands. Although these commands seem complicated, they will still have a serious impact on your system. some of them will affect your program and system running, some will

Since the installation of the qmail mail system, there has been no problem in use, but some accounts will see a large number of spam messages every day), virus mail attachments are Trojans and other viruses ), A large number of spam messages cause

In linux, ftp command parameters are one of the most frequently used commands by Internet users, A large number of internal commands of ftp command parameters in linux will be encountered, and you are familiar with and flexible to use internal

Device files are used to represent physical devices. Most physical devices are used for output or input. Therefore, the device driver in the kernel must get output from the process to the device. This can be done by opening the output device file

Overview In LINUX, the SCSI subsystem consists of the SCSI upper layer, the middle layer, and the underlying driver module [1]. It is mainly responsible for managing SCSI resources and processing other subsystems, such as file systems, i/O requests

Understand linux driversThe skill learning method is very important. When you learn the linux operating system, you may encounter driver problems. Here we will introduce how to learn the linux driver.Here, I will share with you the method. 1. Learn

After studying GNU/Linux for a long time, I would like to share with you the experiences of installing vmware on GNU/Linux. After reading this article, you must have gained a lot from installing vmware on GNU/Linux, I hope this article will teach

[Root @ XXX ~] # Ifconfig Eth0 Link encap: Ethernet HWaddr 00: 0C: 29: C8: 87: DB Inet addr: 192.168.5.103 Bcast: 192.168.5.255 Mask: 255.255.255.0 Inet6 addr: fe80: 20c: 29ff: fec8: 87db/64 Scope: Link Up broadcast running multicast mtu: 1500

Linux route settings are not frequently used for binding ip addresses and mac addresses. However, these ip addresses are used in the Intranet to connect to the Internet and must not be stolen by illegal users. This involves the arp protocol. First,