A Quick Guide to Essential Networking Commands

Ping
* Purpose: Checks network connectivity to a specific host.
* Syntax: ping [host]
* Example: ping google.com
* Output: Displays the round-trip time (RTT) for each packet sent to the host.

Whois
* Purpose: Provides information about a domain name, such as the owner, registrar, and creation date.
* Syntax: whois [domain]
* Example: whois google.com
* Output: Displays detailed information about the domain.

Dig
* Purpose: A flexible DNS lookup tool that can perform various DNS queries.
* Syntax: dig [domain]
* Example: dig google.com
* Output: Shows DNS records for the domain, including A, MX, NS, and CNAME records.

Reverse Lookup
* Purpose: Determines the hostname associated with an IP address.
* Syntax: dig -x [IP address]
* Example: dig -x 8.8.8.8
* Output: Displays the hostname associated with the IP address.

Wget
* Purpose: Downloads files from the internet.
* Syntax: wget [URL]
* Example: wget https://example.com/file.zip
* Output: Downloads the file to the current directory.

Wget-c
* Purpose: Resumes a stopped download.
* Syntax: wget -c [URL]
* Example: wget -c https://example.com/large_file.iso
* Output: Resumes downloading the file from the point where it was interrupted.

Wget-r
* Purpose: Recursively downloads files from a URL, including all linked files.
* Syntax: wget -r [URL]
* Example: wget -r https://example.com/
* Output: Downloads all files and subdirectories from the specified URL.

Curl
* Purpose: A versatile tool for transferring data using various protocols.
* Syntax: curl [URL]
* Example: curl https://example.com
* Output: Displays the web page content in the terminal.

Curl-o
* Purpose: Saves the output of a curl command to a file.
* Syntax: curl -o [filename] [URL]
* Example: curl -o index.html https://example.com
* Output: Saves the web page content to the specified file.

SSH
* Purpose: Securely connects to a remote host.
* Syntax: ssh [user]@[host]
* Example: ssh john@example.com
* Output: Connects to the remote host as the specified user.

SSH-p
* Purpose: Specifies a different port for the SSH connection.
* Syntax: ssh -p [port] [user]@[host]
* Example: ssh -p 2222 john@example.com
* Output: Connects to the remote host using the specified port.

SSH-D
* Purpose: Sets up a local SOCKS proxy for tunneling traffic through the SSH connection.
* Syntax: ssh -D [port] [user]@[host]
* Example: ssh -D 1080 john@example.com
* Output: Sets up a local SOCKS proxy on the specified port.