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Red Hat Enterprise Linux cheat sheets for system administrators

Red Hat Enterprise Linux (RHEL) comes with a variety of different tools to manage and configure operating system services and included applications — but the scope of tools and services can be overwhelming. In real life, most administrators are going to use the same types of commands to perform routine tasks, so you don’t need to know all the thousands of potential commands and services. When you master the basics, you can manage your infrastructure for most required tasks.

These cheat sheets work to simplify and clarify managing RHEL systems by showing common commands for common scenarios. These are references (not manuals or how-tos), but they can be handy tools when you need to try a new command or remember how to do something. And if you want other tools for using RHEL, check out RHEL Discover More Page.

Topic	Description	RHEL Versions
RHEL interactive lab cheatsheets	A references of the step-by-step commands in different RHEL interactive demos, including podman, buildah, stratis, VDO, and bcc.	RHEL 8
ip commands	Using the ip command to manage networking confoiguration such as addresses and routing.	RHEL 7
RHEL 8 commands	Basic administrative commands, including yum	RHEL 8
Basic Linux commands	A range of basic to advanced commands; screenshots of command output; tips from cat to tar -xf somefile.tar.gz.	All
Advanced Linux commands	Get started developing a web application on Red Hat Enterprise Linux 7; set up a SELinux boolean; run a program in the background in your shell; use Java instead of PHP	RHEL 7
systemd	A quick reference to the systemd systemctl and journalctl commands, options, and tasks for managing boot process, system services, and runlevels.	RHEL 7 and 8
podman	All commands related to images, containers, and container resources.	RHEL 7.6+ and RHEL 8
.NET Core 2.0 on Linux	The basics on installing .NET Core 2.0 on Red Hat Enterprise Linux; getting to Hello World; how to get a simple program running; running your .NET code in a Linux container	RHEL 7

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Software Collections

When developing applications for Red Hat Enterprise Linux (RHEL), developers have two major toolchains to choose from:

1. There is a set of tools (known as base tools) delivered within RHEL which includes Python, GCC, PHP, Ruby, Perl, and much more. These tools have the same support life cycle as RHEL — up to ten years. To maintain compatibility, the major versions of these tools are fixed at the time of the «dot-zero» release of RHEL. If you want a toolchain that’s supported for 10 years, then use these.
2. Red Hat Software Collections (RHSCL) are for developers looking for continually updated tools such as the latest stable versions of dynamic languages, open source databases, web infrastructure, and other essential development tools.

RHSCL releases occur semi-annually. The collections have a two to three-year support life cycle to allow for rapid innovation without sacrificing stability. RHSCL is available with supported RHEL 6 and 7 subscriptions, all RHEL developer subscriptions, and the no-cost RHEL Developer subscription. In addition to RHEL, many of the collections with Linux containers are also available on Red Hat OpenShift Container Platform, and more.

Software collections allow you to concurrently install multiple versions of the same software components on your system. Packages built as a software collection do not overwrite the versions (base tools) included with RHEL.

Building applications in Linux containers.

Many RHSCL collections are available with dockerfiles, but are also distributed as full Linux container images that can be obtained from the Red Hat Container Catalog. This makes it easy to build and deploy applications in Linux containers that use RHSCL components.

The dockerfiles used to build the RHSCL container images are provided as RHSCL RPMs on Red Hat Enterprise Linux 7. These source dockerfiles can be used for building containers with customized RHSCL components.

The Portfolio

RHSCL includes many popular developer resources. Here are a few of the latest versions:

• Languages and frameworks
  • Node.js 14.11.0
  • Perl 5.30.1
  • PHP 7.3.20
  • Python 3.6
  • Ruby 2.6
  • Ruby on Rails 5.0
  • Databases (learn about syspaths with some of these>
    • MariaDB 10.3
    • MongoDB 3.6
    • MySQL 8.0
    • PostgreSQL 10
    • Redis 5
    • Web and application servers and HTTP accelerators
      • Apache httpd 2.4.34
      • nginx 1.18.0
      • Phusion Passenger 4.0
      • Varnish Cache 6.0
      • Complementary development tools
        • Git 2.27.0
        • Maven 3.5
        • IDE
        • Eclipse IDE 4.7

        For the full list of collections see the latest RHSCL Release Notes, and here for their respective life cycles.

        Compiler toolsets. If you are looking for the latest stable versions of compilers, see Red Hat Developer Toolset (DTS) for the C++ GNU Compiler Collection, GDB, and numerous analysis/debugging tools. Additional compiler toolsets are available for Clang/LLVM, Go, and Rust.

        Try Red Hat Software Collections today

        Follow our RHSCL get started guides to try Node.js, Perl, PHP, Python, or Ruby on Red Hat Enterprise Linux 7.

        Need a subscription? Developers can get a no-cost Red Hat Enterprise Linux Developer subscription by registering and downloading through developers.redhat.com.

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        Red Hat Linux Commands

        The following article provides an outline for Red Hat Linux Commands. Red hat Linux command is defined as, Red Hat Enterprise is the world’s prime firm Linux platform, verified on hundreds of clouds and with thousands of hardware and software sellers. It can be acquired to help particular instances such as edge computing. It is an effective platform for Microsoft SQL Server which gives an extensible foundation and a compatible application experience. The Linux command is a plan that can run on the command line, which is the interface that can receive lines of text and operate together for instructing our computer. Some graphical user interfaces are just an extraction of a command-line program.

        

        Web development, programming languages, Software testing & others

        What is Red Hat Linux Commands?

        Linux command is the plan or pursuit which can run on the command line. All the fundamental and modern job has been performed by accomplishing the commands. The commands are carried on the Linux terminal. The terminal is the command-line interface to communicate with the system which is alike the command prompt in the Windows operating system. The commands in Linux are case-sensitive.

        Nearly all Linux commands are dispersed together with man pages. A man is also called a manual so it is a formation of documentation that describes what the commands do. It means how we can rush the command and what arguments it received.

        The ‘man’ command has been utilized to exhibit the manual page of a provided command.

        And also, for opening the ‘man’ page of the ‘cd’ command we can type.

        Where ‘$’ in the command can re-allocate the result of a command or it can also re-allocate the values of various commands.

        Basic Red Hat Linux Commands

        Given below are the basic red hat linux commands:

        1. Print Working Directory(pwd)

        The ‘pwd’ is the command which can interpret your working directory. Which can provide the location of the surviving directory.

        2. Make Directory(mkdir)

        This command has been utilized to generate a new directory within any directory.

        3. List(ls)

        This command has been utilized when we want results as a list of content of a directory.

        4. Change Directory(cd)

        This command has been utilized to change the surviving directory.

        5. Rmdir Command

        This command has been utilized to delete a directory.

        6. Copy a File(cp)

        This command has been utilized to copy a file or directory.

        To copy in the identical directory

        7. Move Command (mv)

        This command has been utilized to move a file from one location to another location.

        8. Rename a File Command

        This command has been utilized to rename files and is also useful to rename large groups of files.

        rename ‘s/old-name/new-name/’ files

        9. Change Permissions(chmod)

        This command has been utilized when we wanted to convert the permission of a file.

        10. Remove a File(rm)

        The ‘rm’ command has been utilized for removing a file.

        11. Touch Command

        This command has been utilized to generate the empty files. We can generate various empty files by carrying out once.

        Red Hat Linux Commands Toolbox Features

        A toolbox is a tool that can be utilized for the Linux operating system it authorizes the users to make use of the containerized command line environment. It has been constructed on top of Podman and various technologies from OCI.

        The toolbox environment is depending on the OCI image. On Fedora, this is the fedora-toolbox image which can be utilized to generate a toolbox container that coherently can combine with the remaining operating system by giving entry to the user’s home directory.

        1. Security Resources and Tools

        The Red Hat Enterprise Linux gives the built-in security feature and profiles for clarifying how the organizations can overcome the risk and better support consent. Organizations can utilize identity management RHEL can now utilize Ansible tooling to construct smart card authorization over the complete topology. The organization can access the RHEL systems by utilizing identities that are reserved in external origins.

        2. Developer Friendly Design and Features

        RHEL can merge production firmness with developer agility. It can have features as it can open up application development as well as installation, coding, tool selection, and setup and container tools. It runs on various runtime languages, compilers and open-source databases, and web and cache server which is carried through a stream of application.

        3. Web Console

        New improvements in the web-based tool are outlined to create it simple to carry out standard configuration and management tasks by utilizing the browser interface. It can view and control the system-wide crypto policies for large consistency and risk overcome from surviving and potential future attacks.

        4. System Roles

        A group of managed workflows with RHEL authorizes the organizations quickly and continuously from various RHELs by utilizing the equal automation playbooks. The web console system role can manage the multi-link cluster. The capacity to arrange STONITH block device, and capacity to configure package resources.

        5. RHEL for SQL

        This strengthens features authorized to install, configure, and regulate a SQL server environment and SQL server. It can be present with the Red Hat Enterprise Linux on huge demand ability add-on. It can also give operational working regulations.

        6. RHEL for Workstation

        The RHEL for workstation 9.1 Beta now assists Firefox, especially on Gnome Wayland sessions. It authorized users to utilize more native tools.

        7. Containers

        This tool has been utilized to upgrade the container image and faith within the organization. As a technical preview Podman and Skopeo and sign and authorize the signature by utilizing local keys.

        Conclusion

        In this article, we conclude that the Red Hat enterprise is the leading enterprise Linux platform. We have also seen the basic Red hat commands which are helpful for beginners and professionals and Red Hat commands toolbox with features. So, this article will help to understand the concept of Red Hat Linux Commands.

        Recommended Articles

        This is a guide to Red Hat Linux Commands. Here we discuss the introduction, basic red hat linux commands and toolbox features. You may also have a look at the following articles to learn more –

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