Linux

Ways to open ports:Method One: Command line mode1. Open port command:/sbin/iptables-i input-p TCP--dport 8080-j ACCEPT2. Save:/etc/rc.d/init.d/iptables Save3. Restart Service:/etc/init.d/iptables restart4. Check if the port is

1. Create a new. pip filemkdir ~/.pip2. Create a new pip.conf configuration file under the. pip fileTouch pip.conf3. Edit the pip.conf configuration fileVI pip.conf[Global]Trusted-host = pypi.douban.comIndex-url = Http://pypi.douban.com/simpleOther

commands for the common Unzip tool: gzip (. gz) bzip2 (. bz2) XZ (. xz) compress (. z) tar (. tar)1.gzipSyntax: gzip option FILECommon options:-D-#-C(1)-D decompressionDecompression method: "Gzip-d FILE"(2)-# set compression ratio, default is 6

The network software is composed of the client and the service side, and the server listens to the specified port to process the received data, and the client sends the data to the server-side listening port, and the data is processed by the server

1. File basic informationTime Type: Access time, change time, modification time, delete timeYou can use the Stat command to view file time2. File types-Normal fileD catalog Fileb Device files (block devices)C Device file (character device)s socket

Linuxfile content Viewis aLinuxOperations , the following is an essentialLinuxview a summary of the commands under common file content. 1. Cat starts displaying the contents of the file from the first lineUsage:Cat-a is equivalent to-vet 's

Linux: Operating system, common commands on Application server: CD switch command CD/CD~CD../.. /CD XX ll show all the files ll-h friendly Display mkdir create directory mkdir directory name mkdir-P a/b/b/b rmdir Remove directory rmdir directory

Linux---Tail commandTail command---in linux for viewing file contentsThe most basic are cat, more and less.1. If you want to see only the first 5 lines of the file, you can use the Head command, such as:Head-5/etc/passwd2. If you want to view the

The basic application of Iptables firewall on Linux iptables is commonly used on Linux firewall software, the following VPS detective to everyone said Iptables installation, clear iptables rules, iptables only open the designated port, iptables mask

in the configuration Hadoop is, in the format of Hadoop, there is no JDK found I used CENTOS7 is 64 bit, found that the machine has Java, looked for its location found the JDK-1.7.0_75which java[[email protected] Hadoop-1.1.2]# which

Linux knowledge point details, linux knowledge points1. My Linux requirements Here we will discuss my requirements for online Linux machines, so I will only discuss stable releases and a relatively conservative version. For example, the xfs of

Check the file modification history in git, troubleshoot git errors, and solve conflicts This article records several git-related code comparisons and displays the file modification history commands, which are useful in the process of resolving

Common commands for transferring files between linux systems In linux, the scp command is generally used to transmit files through the ssh protocol. Below are just a few examples. 1. download files from the server Scp username @

Install the latest video editor Avidemux 2.7.0 on Ubuntu 17.10 and 18.04. Avidemux 2.7.0 is released. Download and install Avidemux Video Editor in Ubuntu. Avidemux is a free video editor designed for simple cutting, filtering, and encoding

Save the window position in the Xfce session Abstract: If you find that the Xfce session cannot store the location of the window, enable "save upon logout" and log out again, this problem may be fixed permanently (if you want to maintain the same

Linux fmt command usage and Cases Sometimes you will find that you need to format the content in a text file. For example, the text file has one word per line, and the task is to put all words in the same line. Of course, you can do it manually, but

Add the first image tutorial for the monitored server on the zabbix3.4web interface and the first image tutorial for zabbix3.4web The monitoring server of zabbix is managed as a group. Before creating a single monitored server, you must create a

Simple implementation of Linux multi-process CS ServerLinux multi-process CS server Multi-process multi-user connection, that is, each user has a connection. Here, the server still converts the received string to uppercase and returns it to the

Build a Web Cluster Environment Using Nginx and Tomcat I have been familiar with tomcat for web servers for a long time, but I am still a little unfamiliar with nginx. Once I see nginx configuration, there is an inexplicable rejection. This is a

Install and configure Solr 7.2 in Linux Solr is an independent enterprise-level search application server that provides APIs similar to Web-service. You can submit an XML file of a certain format to the search engine server through an http request