Foreword Due to the need of work, recently I started to clean up the shell script again. Although most commands are often used by the user, they are always ugly when they are written into scripts. And when I read scripts written by others, I always find it difficult to read. After all, shell script is not a serious programming language, it is more like a tool to mix different programs read the whole passage

Recently, a forum was set up, and errors (100010) were always reported when accessing QQ Internet. As shown in the figure below, it is found through online search methods that the reason is the wrong callback address, but the online methods are old posts of several years ago, and the methods are outdated, and do not actually help me solve the problem. Through my own attempt, I found that the following methods can be used to solve the problem. Look at the picture above. I'm reporting a wrong letter read the whole passage

In the first half of last year, we began to use Linux for development and entertainment. Now we can't go back to Windows. Let's get down to business. I have been using vim on Linux. I gradually became familiar with its commands, and finally understood what is the god of editors. Recently, I took the time to sort out this quick checklist. I have gained a lot and shared it with you. Enter vim vim read the whole passage

The security of operating system is one of the most important and basic problems in the field of information security. With the rapid development of domestic Internet technology and industry in recent years, more and more users use Linux network operating system as the server. Linux is faced with unprecedented development opportunities, while Linux is also facing more and more security risks. As an open system, on the Internet read the whole passage

This article introduces some Linux command line tools that can be used to monitor network usage. These tools can monitor the data transmitted through the network interface and measure the current speed of which data is transmitted. Inbound traffic and outbound traffic are displayed separately. Some commands can display the bandwidth used by a single process. In this way, users can easily find a process that is over using network bandwidth. This read the whole passage

1. Edit the firewall configuration: vi/etc/sysconfig/iptables Add a new port 4444 to the firewall - A INPUT - m state -- state NEW - m tcp - p tcp -- dport 4444 - j ACCEPT============= read the whole passage