RNDC controls the operation of a name server. rndc uses tcp connection to communicate with bind server for sending commands authenticated with digital signatures. Configure RNDC Key for Bind9 using below steps. Step 1: Create RNDC Key and Configuration File First step is to create rndc key file and configuration file. rndc provides command...
Command named-checkconf checks the syntax only of a named ( bind ) configuration file. The file is parsed and checked for syntax errors, along with all files included by it. If there are no file is specified with command, /etc/named.conf is read by default. Tip 1: Check DNS (Bind) Configuration In case of any...
The DNS (Domain Name System) is a distributed system, used for translate domain names to IP address and vice a versa.For example when we type domain name in browser url like “https://tecadmin.net”, Our computer sends a request to DNS and get an ip address of domain. This article will help you to step by...
xargs is a Linux/Unix powerful command to build and execute command lines from standard input. It takes output of a command and pass it as argument of another command. xargs takes standard input, delimited by blanks or newlines, and executes the command one or more times with any arguments followed by items. Blank lines...
Fsniper is a useful tool for directory monitor, and execute predefined actions on files created or modified in that directory. For example, if we want to make a backup of each files created in your web upload folder or ftp directory, Using fsniper we can copy all files created in that folder to backup...
wget is Linux command line utility. wget is widely used for downloading files from Linux command line. There are many options available to download a file from remote server. wget works same as open url in browser window. Tip 1: Download File using Wget Below example will download file from server to current local...
What is Checken/Egg Problem. Chicken/Egg problem occurred in booting process of Linux. A Linux kernel required modules to mount root partition which typically uses ext3 file system, LVM, RAID, etc. All the Linux modules resides in /var/lib/($uname -r) directory but Linux kernel could not access them without mounting it. So the problem was that...
.htaccess stands for “hypertext access”. This is the default Apache directory level configuration file. .htaccess can be used to secure a particular directories in web server. One of the most common uses is to require user authentication in order to serve certain web pages. Create .htaccess File. First create a .htaccess file in your...
While working on Linux systems we preferred crontab for scheduling jobs generally. There are another utility at command is very useful for scheduling one time tasks. It reads commands from standard input or script/file which can be executed later once. But we can’t use at command for any recurring tasks. For recurring tasks use...
find is a Linux command line tool to search files and directories in the file system. The find command works much fast than any other command. It provides a large number of options for more specific search. It also supports wildcard characters. Every system admin must read this article and understand the uses of...