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Linux Commands Basics- Learning Linux servers start by learning the Linux commands basics. In this Linux commands basics article by Best Linux Web Hosting we are going to give you some basic pointers on the Linux commands basics. Linux Commands Basics!

There are several ways to access a remote computer. One of them is through Secure SHell (SSH), which makes access more secure. The Linux OS can be accessed through SSH, and this article provides basic information about Linux Commands.

What Is SSH?

SSH uses a command-line interface (CLI) to access the shell. The other alternative is a graphical shell, which provides the user with a graphical user interface (GUI). A graphical interface is considered less safe by some, and a CLI interface is considered far more complicated, but swifter for an advanced user.

A command line interface is used by typing or pasting in commands. After each instruction, the Enter key is pressed to signal completion, and if the command is understood, it is then acted on. There are a variety of possible responses to a command including performing an action, issuing a warning, requesting authentication, or pointing out a mistake (that is, inability to understand the command). In the latter case, this could happen because of a typo or an attempt to use a command that doesn’t work on the system.

SSH is a secure way to communicate with a remote computer. It was developed to replace a method known as telnet, which had much greater security issues. It provides access to the shell, which provides an interface to the operating system, but did so in a way that allowed an eavesdropper on the local network to see every command typed. SSH has better authentication as well as the capability to conduct secure file transfers and other security measures. It is capable of using Advanced Encryption Scheme (AES), the encryption used, for example, to protect WLANs (Wireless Local Area Networks).

Before You Do Anything, Read This!

1. . If you do not know what you’re doing, you can create major problems. Do not use SSH unless you are absolutely sure you know how to use it.

2. There are a number of SSH clients—programs that can enable you to connect to the remote computer using the secure shell protocol. As with other types of programs—say, word processors—some are proprietary, which means you need a license to use them. Others are open source and may be used freely.

3. Of the many SSH clients, some can be used from computers and other devices with a variety of operating systems (that is, the operating system of the computer or device from which you’re controlling the remote computer), while some can only be used on one platform. If there is only one platform, it is usually Windows. So, if you are trying to control a Linux computer from a device with a Windows OS, your choices for SSH client are different from if you are trying to control a Linux computer from a device with a Mac, Linux, BSD, or Android.

4. Some Linux distributions include OpenSSH, an open source version of SSH, but not all do. Open SSH has the most platform compatibility of any SSH client.

5. The various clients have different features and capabilities, different versions, and different commands to effect identical results.

6. It may not be true that every SSH command of every SSH client has been tested with every Linux distribution. For example, a list used to write this article claimed only that it was tested with Fedora and Ubuntu. It did not identify the version, nor did it give any information about the possible uses or consequences of use with other Linux distributions.

7. Read all warnings carefully. If you are warned about a connection, you should cancel and contact the administrator.

8. Some SSH commands can only be used by the superuser (root).

9. The man command (short for manual) can help you determine the meaning of a command if you are not sure if it is correct or appropriate to the SSH client you are using.

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