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aria2c: A Multi-Protocol Download Utility
aria2c is a powerful command-line download utility that supports HTTP/HTTPS, FTP, SFTP, BitTorrent, and Metalink. It can significantly improve download speeds by downloading files from multiple sources and using multiple connections simultaneously.
curl -I: Check HTTP Header Information
curl -I is used to fetch and display only the response headers from a web server. This is useful for quickly checking the status of web resources, cache information, server types, and more. Since it doesn't download the actual content, it's fast and efficient.
curl: HTTP Requests and File Transfer (Silent Mode)
`curl` is a powerful command-line tool for transferring data using various protocols (HTTP, HTTPS, FTP, etc.). Specifically, the `--silent` or `-s` option suppresses unnecessary output such as progress meters or error messages, making it useful for obtaining clean output in scripts or automated tasks. The `curl-silent` you inquired about is not an independent command, but often refers to the practice of using the `curl` command with the `-s` option.
curl-verbose: Detailed output of curl's communication
`curl-verbose` refers to the concept of using the `-v` or `--verbose` option with the `curl` command to display detailed information about the HTTP(S) request and response process. This mode allows you to obtain in-depth information about network communication, including DNS resolution, TCP connections, SSL/TLS handshakes, request headers, response headers, and data transfer, making it extremely useful for debugging and troubleshooting.
dig: DNS Information Lookup
dig (Domain Information Groper) is a powerful command-line tool used to query Domain Name System (DNS) servers to retrieve various DNS information such as domain names, IP addresses, and mail exchanger records. It is essential for network troubleshooting and verifying DNS records.
firewalld: Dynamic Firewall Service Management
firewalld is a dynamic firewall management daemon for Linux systems. It allows for easy management of firewall rules using the concept of network zones, and enables rule changes even while services are running. It serves to replace or complement existing iptables.
ftp: File Transfer Protocol Client
The ftp command is a command-line client used to connect to an FTP (File Transfer Protocol) server to upload or download files. Although an older protocol, it is still used in some environments and is useful for simple file transfer tasks.
host: DNS Lookup Utility
The host command is a simple command-line utility used to perform DNS lookups, translating hostnames to IP addresses or vice versa. It is primarily used for querying DNS records such as A, AAAA, MX, and NS.
Mastering the HTTPie Command
`httpie` is a command-line HTTP client that makes interaction with APIs and HTTP servers easy and intuitive. It offers a more user-friendly syntax than `curl`, along with features like automatic JSON support and syntax highlighting. It is primarily used for API testing, debugging, and communicating with web services.
ifconfig Command Guide: Checking and Configuring Network Interface Information (Legacy)
`ifconfig` command is a utility used to check and configure network interface information in Linux and Unix-like operating systems. It can display IP addresses, MAC addresses, network statistics, and more. **However, the more powerful and flexible `ip` command has replaced `ifconfig` in modern Linux systems, so it is recommended to use the `ip` command.** This guide will help you learn the basic usage of `ifconfig` and understand why you should transition to `ip`.
iftop: Real-time Network Bandwidth Monitoring
iftop is a command-line tool that displays real-time bandwidth usage on a network interface. It visualizes transmitted and received traffic by source/destination IP addresses and ports, making it useful for diagnosing network issues and analyzing usage.
ip Command Guide: Managing Network Interfaces and Routing
`ip` command is a powerful command-line utility used to check and configure various network-related information such as network interfaces, routing tables, and ARP (Address Resolution Protocol) cache in Linux. It offers more features than the traditional `ifconfig` command and is the recommended tool for network management on modern Linux systems. Use this guide to learn the main usages of the `ip` command.