How to Get the Full URL in PHP
In PHP, using the $_SERVER variable is the easiest way to get the full URL.
Using $_SERVER Variable
$_SERVER is an array containing information such as headers, paths, and script locations.
The following example should cover whatever you are trying...
How to Check if a String is a Valid URL in Go
In Golang, there are 2 ways to validate URL with standard package.
Using ParseRequestURI Function
url.ParseRequestURI parses a raw url into a URL structure. It assumes that url was received in an HTTP request, so the url is interpreted only as an ab...
How to Download a Large File in Go
In Golang, using the io.copy function is the easiest way to download a large file
Using io.Copy Function
The io.Copy() function copies from src to dst until either EOF is reached on src or an error occurs. It returns the number of bytes copied and ...
How To Install Rust in Linux
In Rust, there are two ways to install rust in Linux.Running the following in your terminal
If you’re running macOS, Linux, or another Unix-like OS. To download Rustup and install Rust, run the following in your terminal, then follow the on-screen i...
How to fetch data from url in Python
Fetch Internet Resources Using The urllib Package.Fetching URLs
The simplest way to use urllib.request is as follows:
#!/usr/bin/env python3
# Import datetime module
import urllib.request
with urllib.request.urlopen('https://google.com') as respon...
How to generate a random string in Go
Creating Random Strings of a fixed length in Go.
Using rand.Int63 Function
Int63 returns a non-negative pseudo-random 63-bit integer as an int64 from the default Source.
package main
import (
"fmt"
"math/rand"
"time"
)
const letters = "a...
How to handle If-modified-since header in PHP
Reduce Bandwidth Usage by Supporting If-Modified-Since in PHP.
If-Modified-Since
The If-Modified-Since request HTTP header makes the request conditional: the server sends back the requested resource, with a 200 status, only if it has been last modif...
How to get content from a url in Go
Reading from a url resource in Go.Fetching a URL
Go provides a collection of packages, grouped under net, that make it easy to send and receive information through the Internet. Package http provides HTTP client and server implementations.
packag...
How to use the telnet command in Linux
user interface to the TELNET protocol.
Telnet is an application protocol used on the Internet or local area network to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspe...
How to use the mkdir command in Linux
Create the DIRECTORY(ies), if they do not already exist.
mkdir command in Linux allows the user to create directories (also referred to as folders in some operating systems ). This command can create multiple directories at once as well as set the p...
How to use the history command in Linux
history command is used to view the previously executed command.
The history command works with the command history list. When the command is issued with no options, it prints the history list.
The History library provides a history expansion featur...
How to use the kill command in Linux
terminate a process.
kill is a command that is used in several popular operating systems to send signals to running processes.
The command kill sends the specified signal to the specified process or process group. If no signal is specified, the TE...
How to use the head command in Linux
Print the first 10 lines of each FILE to standard output.
head is a program on Unix and Unix-like operating systems used to display the beginning of a text file or piped data.
By default, head will print the first 10 lines of its input to the stand...
How to use the gzip command in Linux
Compress or uncompress FILEs.
Gzip reduces the size of the named files using Lempel-Ziv coding (LZ77). Whenever possible, each file is replaced by one with the extension .gz, while keeping the same ownership modes, access and modi‐ficati...
How to use the grep command in Linux
Search for PATTERN in each FILE or standard input.
grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Its name comes from the ed command g/re/p (globally search for a regular expression and p...