Linux Networking Commands
In this comprehensive guide, we will provide an overview of some essential Linux networking commands. Moreover, these are useful for troubleshooting connectivity issues, transferring files, and managing remote servers.
Specifically, we will cover
ssh – extremely valuable Linux utilities for any tech professional. Furthermore, understanding these critical network commands will save time and effort in managing Linux systems.
ping command sends ICMP echo request packets to a specified host or IP address. It then lists the response times from that system. This is helpful to quickly verify basic network connectivity between the Linux system and another target.
Here is the syntax:
In short, this will ping the google.com domain and print out round-trip stats.
whois command queries Internet registry databases for information on a specific domain name’s availability. Also, it shows ownership details.
To use it:
Eventually, this prints registration info, name servers, and contacts for the facebook.com domain.
dig command performs DNS lookups. It then returns detailed DNS records for a domain or host. This further helps troubleshoot DNS issues or check a domain’s configuration.
To use it, simply use the below format:
Shows the DNS details for a domain.
We can also do reverse lookups with:
dig -x host
Consequently, this performs a reverse DNS query on the IP address of host.
wget command downloads files from web servers. Moreover, it supports HTTP, HTTPS, and FTP.
This downloads the file from the web server.
We can also resume interrupted downloads with:
wget -c file
Indeed, we can recursively download an entire site with:
wget --recursive url
curl transfers data to or from a server. It supports FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, LDAP, MQTT, POP3, IMAP, SMTP, RTSP, and more.
As a result, this outputs the content of the webpage at the URL.
We can save the output with:
curl -o file url
This saves the output to the file.
ssh command provides secure encrypted connections between Linux systems for remote administration.
To connect as a user, run:
We can also specify a custom port:
ssh -p port user@host
And we can even tunnel other traffic through an SSH connection for added security.
Learning essential Linux networking commands like
ssh is critical for Linux admins and power users. Additionally, utilizing this network toolbox will enable diagnosing connectivity issues, gathering intel on domains/IPs, securely transferring files, and managing remote servers.
Try interacting with Linux systems on a deeper network level today!