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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.
nginx: Send HTTP User Agent Requests To Specific Backend Server
You can send HTTP User-Agent requests to a specific backend server in Nginx using the map directive. The map directive is used to create a lookup table that can be used to match specific conditions and take actions based on those conditions. Here is an example of how to send HTTP User-Agent reque
Linux Find Wireless WiFi Driver Chipset Information
You can find information about the wireless WiFi driver and chipset on a Linux system using the following methods: n n Using the lspci command:n The lspci command displays information about all PCI buses and devices in your system, including the wireless WiFi adapter. You can use the following comma
Find Command Exclude Directories From Search Pattern
You can use the find command in Linux to search for files and directories, and exclude certain directories from the search pattern using the -prune option. The -prune option allows you to exclude specific directories from the search, without having to search their subdirectories. Here is an examp
Linux incrond inotify Monitor Directories For Changes And Take Action
incron is a Linux utility that allows you to monitor directories for changes and take action based on those changes. It uses the inotify framework to monitor changes to files and directories, and can be used to automate tasks such as copying, moving, or deleting files. n Here is an example of how to
Rsync Change SSH Port Number While Making Backups
To change the SSH port number when using rsync for backups, you need to specify the new port number in the rsync command using the -e option. The -e option allows you to specify a custom command to use for establishing the connection. For example, to change the SSH port to 2222 , you could use th
FreeBSD: Disable / Stop Console Beep ( Bell )
You can disable the console beep (bell) in FreeBSD by adding the following line to your "/etc/sysctl.conf" file:rn rn rn kern.vt.enable_bell=0rn rn rnThis setting will persist across reboots. If you want to disable the console beep immediately, you can run the following command:rn rn rn # sysctl ker
FreeBSD: Atheros AR8131 / AR8132 Gigabit Fast Ethernet Driver Configuration
The Atheros AR8131 and AR8132 Gigabit Fast Ethernet controllers are supported in FreeBSD by the “alc” driver. The driver is included in the base system and should be automatically loaded when the device is detected. n To configure the network interface, you will need to create a network
Nginx: Configure and Install With IPv6 Networking Support
To configure and install Nginx with IPv6 networking support on a Debian-based system, follow these steps:rn rn Install Nginx: rn rn rn rn sudo apt - get update rnsudo apt - get install nginxrn rn rn rn Verify that Nginx is installed by visiting the IP address of your server in a web browser. rn To e
Debian Linux Disable IPv6 Networking
In Debian Linux, you can disable IPv6 networking by modifying the network configuration files. Here are the steps to disable IPv6 on a Debian system:rn rn Open the network configuration file: rn rn rn rn sudo nano /etc/sysctl.confrn rn rn rn Add the following line to the end of the file: rn rn rn rn
HowTo: Make a Symbolic Link To /bin Directory
A symbolic link, also known as a symlink, is a type of link in Unix-like operating systems that points to another file or directory. In this example, you will create a symbolic link to the /bin directory. n To create a symbolic link, you can use the ln command with the -s option, which stands for &#
Unix / Linux: TCSH / CSH Shell Set Variable
In the tcsh or csh shell, you can set a variable by using the following syntax:rn rn rn set variable_name = valuern rn rnFor example, to set the variable name to the value John , you would use the following command:rn rn rn set name = Johnrn rn rnNote that spaces are important in this syntax, and yo
vi / vim: Jump To End Of File Command
In the vi or vim text editor, you can jump to the end of a file using the following command:rn rn rn Grn rn rnPressing G will move the cursor to the last line of the file. If you want to move to a specific line number, you can type nG , where n is the line number you want to go to. For example, to g
Linux / UNIX FTP Commands Tutorial
File Transfer Protocol (FTP) is a commonly used protocol for transferring files between a client and a server over a network. FTP is available on most Unix and Linux systems, and provides a simple way to transfer files to and from a remote server. Here's a tutorial on some common FTP commands:rn
UNIX Source Command: Read And Execute Commands From File
The source command in Unix/Linux allows you to run commands from a file in the current shell environment. The source command is often used to run shell scripts and shell functions, and can be useful for configuring the shell environment, setting environment variables, and defining shell functions.rn
Explains: UNIX / IT Sys Admin L1, L2, and L3 Support Levels
L1, L2, and L3 are commonly used to describe the levels of technical support within an IT organization. These levels help categorize the nature of the support request, and determine which team member is best equipped to handle the request. Here is a general description of each level:rn rn L1 Support
UNIX / Linux: HowTo Use unison File Synchronizer
Unison is a popular file synchronization tool for Unix and Linux systems. It allows you to keep two directories in sync by copying changes made in one directory to the other. ( fisheries ) n Here’s how to use Unison: n n Install Unison: To install Unison, use the package manager for your Linux
UNIX Red Books
The “UNIX Red Books” is a colloquial term used to refer to the official documentation and guides produced by IBM for its AIX operating system, which is based on the UNIX operating system. These books are commonly known as the “Redbooks” due to the distinctive red covers they
Debian Linux Delete Directory Command
In Debian Linux, you can use the rm command to delete a directory. However, the rm command alone will only remove files, not directories. To delete a directory, you must use the rm command with the -r (or --recursive ) option, which tells rm to remove the directory and its contents recursively. n He
Linux Syslogd: Nothing Gets Logged Using /dev/log And /jail/apache/dev/log
If you're having trouble getting log messages to be recorded using /dev/log or /jail/apache/dev/log in a Unix or Linux system, there are several potential causes and solutions to consider:rn rn Check the syslog configuration: Make sure that the syslog daemon (e.g., rsyslogd or syslog-ng ) is configu
Network: Monitor Outgoing Bandwidth Latency / Jitter
There are several tools you can use to monitor outgoing bandwidth, latency, and jitter on a Unix or Linux system. Some of the most commonly used tools include:rn rn ping : The ping command is a simple utility that sends ICMP echo requests to a remote host and measures the time it takes for the host
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