Linux

one, thecat command1, optional parameters-A,--show-all equivalent to -vet-B,--number-nonblank number of non-null output lines-e equivalent to -ve-E,--show-ends displays at the end of each line-N,--number all line numbers for the

Gedit/etc/bashrcThe default special symbolic meaning in the shell environment:\d: Represents the date, in the format weekday month date, for example: "Sun Sep 18"\h: The full host name.For example: My machine name is: Redhat.linux, then this name is

Iptables It is the Linux firewall software is often used, the following said iptables device, delete iptables rules, iptables as long as the specified port, iptables shield designated IP, IP section and unlock, Remove the Add Iptables rule iptables

First, check the installation path of the JDK:Whereis JavaWhich Java (Java execution path)Echo $JAVA _homeEcho $PATHNote: If you are in Windows, you can use:Set Java_home: View JDK Installation pathJava-version: View JDK versionSecond, uninstall the

Have you ever seen a 4-paragraph domain? Most people open the site only to see 3 segments of the domain name, such as Www.baidu.com, but the multi-domain name is the real existence ofWhen we use the dig command to parse the NS records of the

Two special devices for shell condition determination/dev/nullThe empty device of a Linux system, also known as a bit bucket, is discarded when you do not want the normalized output to be displayed or saved to a file to be directed

For virtual machines, there are three ways to configure Linux Redhat on the InternetI. Configuring with the Setup command (specific tips to check the use of the Setup command)Two. Configure directly with ifconfig eth0 IP addressThree. Enter the

First, set GNOME or KDE as the default startup desktop environmentMethod 1: Modify the/etc/sysconfig/desktop to change the content after "desktop" to KDE or gnome as needed.Method 2: Create the ". Xinitrc" file in the current user directory (note

Ansible-Bulk Linux management tools"Ansible is easy it Automation"--simple automated IT tools. Batch execution of commands on a remote server Automating the deployment of apps Automation Management Configuration Items Automated

Exercise 1: Create a user Oracle, an additional group that belongs to the database and Sql,id number 3000, and a home directory of/home/databaseGroupadd DatabaseGroupadd SQL (Create a new two user group first, Q: Groupadd can I create multiple

Recently changed the Linux system, changed from i686 to x86-64, resulting in the development of the time out of the original SDK in the 32-bit development tools. So, Bo Master found the following article, Bo Master Pro-Test practical: How to develop

1. Download the Generate Key Tool putty kit inside the puttygen.exePutty Tool Small portable, do not need to install, you can use Baidu free download.2, double hit Open puttygen.exe, the lower right corner "number of bits in a generated key" set to 2

Install VNC server on Centos 7 VNC is a good remote tool, whether based on Windows or Linux, Because I recently learned about Centos, therefore, we are going to build a VNC server on Centos 7 so that I can remotely connect to the server from the

Use scripts to easily install the latest Linux kernel in Ubuntu Do you want to install the latest Linux kernel? A simple script can easily complete this task in the Ubuntu system. Michael Murphy wrote a script to install the latest candidate version,

Alien magic: mutual conversion between RPM and DEB As I'm sure you know, there are a variety of software installation methods in Linux: You can use the package management system (aptitude, yum, or zypper) provided by the release ), compile from the

Shared Folder between Linux Virtual Machine and Winodows ---- install VMware tools in Linux It is very troublesome to obtain files from the original local system in the virtual machine. To share folders between the original system and virtual

Install the lightweight Software Center App Grid 0.252 in Ubuntu Let's take a look at it first. App Grid is a closed-source, free software center that can replace the Ubuntu Software Center. App Grid has a modern and intuitive graphic user

CentOS7 reset root password change host name1. Modify the Host Name of CentOS It is easy to modify the host name in CentOS. First, check the current host name. #hostname The current host name is displayed. Modify the command #hostnamectl

Kamailio-V4.3.2 server set up under centos6.5 The installation environment is centos6.5. The first thing to do is: Configure various environments .. Search for details on the Internet. 1. Download the source code: Switch the directory to the

A few simple steps to make your Ubuntu 14.04 server more secure Security reinforcement for server operating systems is a process to reduce vulnerabilities and improve system security, including: install patches to eliminate known security