Understanding Linux

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class="rh-band-header-subsection-headline" id="rh-5mair">What is Linux?</h2> </div>  <div class="rh-generic--component" data-rh-align="left" > <p>Linux® is an open source operating system (OS) created in 1991 by Linus Torvalds. Today, thanks to its global community of enthusiasts, you can find it in all kinds of devices, from retail point-of-sale systems to the world's most powerful supercomputers. </p> </div> </div> <div class="rh-group-footer" >  <div class="rh-group--layout" > <div class="rh-group-body" data-rh-layout="min-stacked" >   <span class="rh-cta--component" data-rh-cta-type="secondary" > <a class="rh-cta-link" href="/en/topics/linux/what-is-linux" target="_self" data-analytics-linkType="cta" data-analytics-text="Learn more about Linux" aria-describedby="rh-5mair" >Learn more about Linux<span aria-hidden="true"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"> <path d="M31.58 18.24a.64.64 0 0 0-.14-.68l-9-9c-.56-.58-1.47.32-.88.88l7.93 7.94H5a.62.62 0 1 0 0 1.24h24.49l-7.93 7.94a.62.62 0 0 0 .88.88l9-9a.72.72 0 0 0 .14-.2Z"/> </svg> </span></a> </span> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-7 rhpb-region dx-flex" style="flex-direction:column">  <div class="rh-card--layout card-flex--subpattern " data-at-card="flex" data-rh-background="gray" data-rh-justify="justify" data-rh-layout="min-stacked" data-rh-theme="light" data-rh-bg-align="cover" > <div class="rh-card-content" data-rh-layout="min-stacked">   <div class="rh-group--layout" data-at-card="flex" data-rh-layout="stacked" > <div class="rh-group-body" data-rh-layout="min-stacked" >  <div class="rh-band-header--hash-offset" data-rh-hash="true"id="explore-red-hat-solutions"></div><div class="rh-band-header--component" data-rh-align=left data-rh-theme="desaturated" ><h3 class="rh-band-header-nested-section-headline" >Explore Red Hat solutions</h3> </div>  <div class="rh-generic--component" data-rh-align="left" > <p><a href="/en/technologies/linux-platforms/enterprise-linux" data-entity-type="node" data-entity-uuid="0e595473-7997-4c3f-b9dc-83e5cab31d0b" data-entity-substitution="canonical" title="Red Hat Enterprise Linux operating system">Red Hat Enterprise Linux</a></p><p><a href="/en/technologies/linux-platforms/enterprise-linux/ai" data-entity-type="node" data-entity-uuid="a939628d-9dd5-471e-be6c-18d0cf830468" data-entity-substitution="canonical" title="Red Hat Enterprise Linux AI">Red Hat Enterprise Linux AI</a></p><p><a href="/en/technologies/linux-platforms/enterprise-linux/cloud" data-entity-type="node" data-entity-uuid="6edac5a1-3d25-4953-b46c-fb5e98305712" data-entity-substitution="canonical" title="Red Hat Enterprise Linux in the cloud">Red Hat Enterprise Linux in the Cloud</a></p><p><a href="/en/technologies/linux-platforms/enterprise-linux/server" data-entity-type="node" data-entity-uuid="37d40b09-19a2-4c1f-9601-a11d784fc8f9" data-entity-substitution="canonical" title="Red Hat Enterprise Linux Server">Red Hat Enterprise Linux Server</a></p><p><a href="/en/topics/linux/why-choose-red-hat-enterprise-linux" data-entity-type="node" data-entity-uuid="367f9bab-4b53-4402-b92c-a0bf464713ed" data-entity-substitution="canonical" title="Why choose Red Hat for Linux?">Why choose Red Hat for Linux</a></p> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section id="linux-topics" class="dx-pb-4" section-properties-enabled> <div class="dx-container dx-relative"> <div class="dx-row "> <div class="dx-col-12 md:dx-col-7 rhpb-region dx-flex" style="flex-direction:column">  <div class="rh-band-header--component" data-rh-align=left data-rh-theme="subtle" data-rh-margin=standard ><h2 class="rh-band-header-subsection-headline" >Topics</h2> </div> </div> <div class="dx-col-12 md:dx-col-5 rhpb-region dx-flex" style="flex-direction:column"> </div> </div> </div> </section> <section class="dx-pb-8" section-properties-enabled> <div class="dx-container dx-relative"> <div class="dx-row dx-justify-start match-region-heights "> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-2aebr" href="/en/topics/linux/whats-the-best-linux-distro-for-you" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-2aebr"> <h3 class="rh-link-tile-headline">Choosing a Linux distro </h3> </hgroup> </div> <p class="rh-link-tile-summary">There are many different versions of Linux. 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Linux is there. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-2skte" href="/en/topics/linux/what-is-centos"data-analytics-text="CentOS Linux" data-analytics-category="What is Linux? | CentOS Linux" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-2skte"> <h3 class="rh-link-tile-headline">CentOS Linux </h3> </hgroup> </div> <p class="rh-link-tile-summary">This open source community project creates CentOS Stream, a distro that incorporates features and innovations from Fedora, generally just ahead of Red Hat Enterprise Linux. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-wbn5t" href="/en/topics/linux/what-is-high-availability"data-analytics-text="High availability" data-analytics-category="What is Linux? | High availability" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-wbn5t"> <h3 class="rh-link-tile-headline">High availability </h3> </hgroup> </div> <p class="rh-link-tile-summary">An IT system is described as having high availability when it has near-zero downtime. Linux can be customized to operate with this level of responsiveness. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-p1yzk" href="/en/topics/linux/what-is-erp"data-analytics-text="Enterprise resource planning " data-analytics-category="What is Linux? | Enterprise resource planning " data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-p1yzk"> <h3 class="rh-link-tile-headline">Enterprise resource planning </h3> </hgroup> </div> <p class="rh-link-tile-summary">Enterprise resource planning (ERP) software helps business processes run more efficiently, giving organizations a single source of truth for data used across departments. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-dbjj5" href="/en/topics/linux/sap-hana-and-linux"data-analytics-text="SAP HANA and Linux" data-analytics-category="What is Linux? | SAP HANA and Linux" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-dbjj5"> <h3 class="rh-link-tile-headline">SAP HANA and Linux </h3> </hgroup> </div> <p class="rh-link-tile-summary">SAP HANA is an in-memory database that helps organize and analyze big data for SAP’s enterprise resource planning (SAP ERP) applications. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-p89n9" href="/en/topics/high-performance-computing/what-is-high-performance-computing"data-analytics-text="High-performance computing" data-analytics-category="What is Linux? | High-performance computing" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-p89n9"> <h3 class="rh-link-tile-headline">High-performance computing </h3> </hgroup> </div> <p class="rh-link-tile-summary">High-performance computing (HPC) generally refers to processing complex calculations at high speeds across multiple servers in parallel. Linux is the dominant OS in this field. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-zojdg" href="/en/topics/linux/linux-server"data-analytics-text="Linux servers" data-analytics-category="What is Linux? | Linux servers" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-zojdg"> <h3 class="rh-link-tile-headline">Linux servers </h3> </hgroup> </div> <p class="rh-link-tile-summary">Servers can run variants of Linux to handle the most demanding business applications, such as web services and databases. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-0buth" href="/en/topics/linux/what-is-the-linux-kernel"data-analytics-text="The Linux kernel" data-analytics-category="What is Linux? | The Linux kernel" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-0buth"> <h3 class="rh-link-tile-headline">The Linux kernel </h3> </hgroup> </div> <p class="rh-link-tile-summary">The Linux kernel is present in all Linux distros, controlling core functions like memory management. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-9y6dz" href="/en/topics/linux/linux-certification"data-analytics-text="Linux certification" data-analytics-category="What is Linux? | Linux certification" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-9y6dz"> <h3 class="rh-link-tile-headline">Linux certification </h3> </hgroup> </div> <p class="rh-link-tile-summary">Linux certifications—offered by many organizations in the open source community, including Red Hat—demonstrate proficiency with various aspects of Linux OS management. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-7n4bc" href="/en/topics/linux/what-is-selinux"data-analytics-text="Security-Enhanced Linux " data-analytics-category="What is Linux? | Security-Enhanced Linux " data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-7n4bc"> <h3 class="rh-link-tile-headline">Security-Enhanced Linux </h3> </hgroup> </div> <p class="rh-link-tile-summary">Security-Enhanced Linux (SELinux) is a security architecture for Linux systems that allows administrators to have more control over who can access the system. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-40o2h" href="/en/topics/edge-computing/latency-sensitive-applications"data-analytics-text="Latency-sensitive applications" data-analytics-category="What is Linux? | Latency-sensitive applications" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-40o2h"> <h3 class="rh-link-tile-headline">Latency-sensitive applications </h3> </hgroup> </div> <p class="rh-link-tile-summary">See how Linux supports applications that rely on minimal latency to function. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-2t4if" href="/en/topics/containers/whats-a-linux-container"data-analytics-text="Linux containers" data-analytics-category="What is Linux? | Linux containers" data-analytics-linktype="cta"></a> <div class="rh-link-tile-content"> <div class="rh-link-tile-header"> <hgroup id="rh-2t4if"> <h3 class="rh-link-tile-headline">Linux containers </h3> </hgroup> </div> <p class="rh-link-tile-summary">Linux containers let you isolate 1 or more processes from the rest of a system, bundling applications with their supporting files and runtime processes. </p> </div> <div class="rh-link-tile--arrow-wrapper"> <svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" aria-hidden="true"><title>Icon-Red_Hat-Directional-A-Black-RGB</title><path d="M29.74 17.95v-.1a.9.9 0 0 0-.03-.086c-.01-.025-.016-.05-.027-.075a.72.72 0 0 0-.148-.223l-3.5-3.5-3.5-3.5a.75.75 0 1 0-1.06 1.06l2.86 2.86 2.86 2.86H7a.75.75 0 0 0 0 1.5h20.19l-2.22 2.223-3.5 3.5a.75.75 0 1 0 1.06 1.06l3.5-3.5 3.5-3.5c.007-.007.01-.016.016-.023a.738.738 0 0 0 .147-.22l.005-.02a.76.76 0 0 0 .045-.236.23.23 0 0 0 .007-.03c0-.017-.008-.032-.01-.05z"></path></svg> </div> </div> </div> </div> </div> <div class="dx-col-12 md:dx-col-3 rhpb-region dx-flex" style="flex-direction:column">   <div class="rh-card--layout rh-link-tile-card" data-rh-background="white" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="stacked" data-rh-justify="justify" data-rh-theme-hover="light" data-rh-background-hover="gray" data-rh-trigger-effect="hover" data-rh-link-area="absolute"><div class="rh-card-content" data-rh-layout=" " >  <div class="rh-link-tile--component" data-rh-align="left" data-rh-tileHeight="tall" data-rh-layout="stacked" > <a class="rh-link-tile-link" aria-labelledby="rh-q2f05" href="/en/topics/linux/what-is-an-image-builder"data-analytics-text="Image builders" data-analytics-category="What is Linux? | 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