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How website valuation actually works, what traffic estimates can and cannot tell you, and which once-standard metrics have quietly stopped existing.
Linux See Ethernet Statistics
You can use the ethtool command to view Ethernet statistics on Linux. Here's how to view Ethernet statistics for a specific interface:rn rn Open a terminal window. rn Type the following command: ethtool eth0 (replace "eth0" with the name of the interface you want to view). rn Press Enter. rn rnTh
BIND: Clocks are Unsynchronized Error and Solution
The "Clocks are Unsynchronized" error occurs when the time on the primary and secondary DNS servers are not synchronized. It can cause issues with zone transfers between the two servers. Here are the steps to resolve the issue:rn rn Check the time on both primary and secondary DNS servers using the
Find the DNS Authority Record for a DNS Domain (SOA)
To find the DNS authority record for a domain, you need to perform a DNS lookup for the Start of Authority (SOA) record. The SOA record provides information about the domain's primary name server, the email address of the responsible party for the domain, and other administrative information. You
Troubleshooting: Apache Webserver Will Not Restart / Start
If the Apache web server is not restarting or starting properly, there could be several reasons. Here are some steps to troubleshoot and fix the issue:rn rn Check the error log: The first step is to check the Apache error log file. On most Linux distributions, the error log is located in the /var/lo
Red hat / CentOS / Fedora Send Yum Package Update Notification Via Email
To send package update notifications via email on a Red Hat/CentOS/Fedora system, you can use the yum-cron package, which is part of the yum-utils package. Here's how to set up yum-cron to send email notifications:rn rn Install the yum-cron package: rn rn rn rn sudo yum install yum-cronrn rn rn r
Solaris UNIX Case-Insensitive Find File Search
To perform a case-insensitive find file search in Solaris, you can use the find command with the -iname option. The -iname option searches for files that match the given pattern case-insensitively. Here's the basic syntax:rn rn rn find / path /to/search -iname "pattern" rn rn rnHere's an example com
Linux / UNIX: Convert Hexadecimal to Decimal Number
You can use the printf command in Bash to convert hexadecimal numbers to decimal. Here is an example:rn rn rn $ printf "%d " 0x2a rn 42 rn rn rnIn the above example, 0x2a is a hexadecimal number, and the printf command is used to convert it to decimal format. The %d format specifier is used to speci
UNIX / Linux: Display Large Colourful Text Banner On Screen
In UNIX and Linux, you can display a large colorful text banner on the screen using the figlet and lolcat utilities. n n To install the figlet and lolcat utilities on your system, you can use the following commands: n n For Ubuntu and Debian: n n n $ sudo apt- get install figlet lolcat n n n For Cen
BASH Shell Redirect Output and Errors To /dev/null
In Bash shell, it is possible to redirect output and errors of a command to /dev/null in order to discard the command's standard output and standard error streams. This can be useful to suppress any unwanted output, such as debugging information, or to run a command in the background without display
FreeBSD: Install bindgraph To Make Graphs About Queries Sent To BIND
bindgraph is a utility for BIND (Berkeley Internet Name Domain) that generates graphs about queries sent to BIND. To install bindgraph in FreeBSD, follow these steps:rn rn Open a terminal and log in as root. rn Install the bindgraph package using the following command:rn rn rn pkg install bindgraphr
Debian / Ubuntu tasksel: Install Group Software (tasks) such As DNS / Web Server In A Single Click
tasksel is a command line tool in Debian and Ubuntu that allows you to install groups of packages that are commonly used together for a specific task, such as LAMP server or DNS server, in a single click. Here are the steps to install a tasks package using tasksel:rn rn Install tasksel, if it is
FreeBSD: NIC Bonding / Link Aggregation / Trunking / Link Failover Tutorial
Network Interface Card (NIC) bonding, also known as Link Aggregation, Trunking, or Link Failover, is a method of combining two or more network interfaces into a single logical interface. This can provide increased network bandwidth and redundancy, as well as improve network availability by providing
How to display line number in vim
To display line numbers in Vim, you can use the following command in command mode:rn rn rn : set numberrn rn rnThis will display line numbers on the left-hand side of the screen. To turn off line numbering, use the following command:rn rn rn : set nonumberrn rn rnYou can also use the short version o
xargs: How To Control and Use Command Line Arguments
The xargs command is a powerful utility that enables a user to take the output of one command and pass it as arguments to another command. Here is an overview of how to control and use command-line arguments with xargs . n The basic syntax for the xargs command is: n n n command | xargs command n n
Linux Execute Cron Job After System Reboot
To execute a cron job after system reboot on Linux, you can add a cron job to the root crontab that runs at reboot. Here are the steps to create a cron job to run after system reboot:rn rn Open the root crontab file for editing using your preferred text editor. You can use the following command t
Squid Proxy Hide System’s Real IP Address
When acting as a proxy, Squid by default adds a header named "X-Forwarded-For" to each request. This header contains the IP address of the client that made the request. However, it's possible to hide the system's real IP address by configuring Squid to remove this header. Here's how to do it:rn r
FreeBSD Jail Access Private Network Via NAT and PF
In FreeBSD, a jail is a form of virtualization that allows you to partition a FreeBSD system into smaller, self-contained environments. Each jail has its own network stack, file system, and processes, making it an ideal solution for building isolated and secure environments. In some cases, you may n
Existing lock /var/run/yum.pid: another copy is running as pid 523.
This error message indicates that there is another instance of the yum package manager currently running on the system. Yum is designed to prevent multiple instances from running simultaneously in order to prevent conflicts and ensure the integrity of the package database. To resolve this issue,
What is Linux?
Linux is an open-source, Unix-like operating system based on the Linux kernel. It was first developed by Linus Torvalds in 1991 and has since become one of the most widely used operating systems in the world. Linux is known for its stability, security, and flexibility, and it is used in a variety of
Kubuntu Desktops Upgrade From 8.10 to 9.04
Kubuntu 8.10 (Intrepid Ibex) and Kubuntu 9.04 (Jaunty Jackalope) are both no longer supported versions. However, for upgrading from one version to another, it is recommended to upgrade through each intermediate version. In this case, to upgrade from Kubuntu 8.10 to 9.04, you should follow the follow
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