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linuxcommand.org

https://linuxcommand.org· First analyzed 26 Apr 2026· Updated 26 Apr 2026
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linuxcommand.org
Desktop screenshot of linuxcommand.org
Mobile screenshot of linuxcommand.org
Mobile

Sponsored

Hosting Provider

Internet Express

IP Address

216.105.38.11

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Los Angeles, United States

ASN

AS11320

Organization

Internet Express

Server

Nginx

Nameservers

dns101.register.com.dns102.register.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
482 ms10%
Speed Index
627 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
55 KB
6 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Blogger

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

C62/100
18
9
0
Meta Tags10/15
Content7/12
Headings6/8
Technical15/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
L
linuxcommand.orglinuxcommand.org

LinuxCommand.org: Learn The Linux Command Line. Write Shell Scripts.

LinuxCommand.org is a web site that helps users discover the power of the Linux command line.

Title Length68 chars

Recommended: 50-60 chars (~411px / 580px)

Description Length93 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    264 URLs

    robots.txt

    1 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    5/100
    Poor
    2 13 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    F33/100
    Bot Access
    20/25
    Machine Read.
    5/25
    Schema Data
    0/25
    Citation
    8/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:17%
    Words:106
    Token eff.:Too Short

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary35w
    Descriptive Headings
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (8)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    B
    74/100
    10
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    15/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    1/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    60/100
    A+
    7 mg
    CO₂e / view
    54.9 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    8 mg
    vs
    Returning (cached)
    4 mg
    Annual (10K/mo)
    816 g
    Emission Segments
    Data Center
    2 mg
    Network
    2 mg
    Device
    4 mg
    Resource Breakdown
    Images
    51.1 KB
    CSS
    2.0 KB
    HTML
    1.9 KB
    Green Hosting Not Verified
    Internet Express
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    71%Good
    Static / Informational

    HTTPS

    No WAF

    58d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp384r1) (384 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    26.03.2026

    Valid Until

    24.06.2026

    Subject Alternative Names (20)

    amanda.orgbluefish.openoffice.nlcode.videlibri.decommunity.jedit.orgextensions.openoffice.orgextensions.services.openoffice.orgexult.infofreecol.org+12 more

    SHA-256 Fingerprint

    98:C8:DE:24:B2:62:A5:B9:22:72:58:15:FA:9C:89:75:95:16:85:19...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    connection
    keep-alive
    content-type
    text/html; charset=UTF-8
    date
    Sun, 26 Apr 2026 16:29:57 GMT
    server
    nginx
    transfer-encoding
    chunked
    cache-control
    🟡 1 Hours(max-age=3600)
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    20

    SPF
    DKIM
    DMARC

    MX Records (3)

    mail2.siteamerica.com
    relay1.exodus.net
    relay2.exodus.net

    Domain Information

    linuxcommand.org

    Domain Age
    26y 1m

    Created

    08.03.2000

    Expires

    08.03.2029

    Last Updated

    11.02.2026

    Registrar

    Register.com - Network Solutions, LLC

    DNSSEC
    Not Enabled

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    D
    55/100
    Mobile Friendly
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1.0
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    verdana

    WCAG AAA
    79/100
    Readability
    /30
    25/30

    19px · LH --

    Hierarchy
    /20
    14/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    24/25

    8.04:1 min contrast

    Performance
    /25
    16/25

    1 font

    Heading Font

    verdana

    Sans37px

    Body Font

    verdana

    Sans19px

    Contrast Ratio

    8.04:1

    WCAG AAA (≥7:1)

    Reading Comfort

    ~45 CPL

    Optimal (45–75)
    37px
    h1
    19px
    p

    ✅ Excellent readability: 19px body text is ideal for all devices.

    ✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

    ✅ Easy to read: Flesch score 74/100 — accessible to general audiences.

    ✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Lean font stack: 1 font families keeps load times fast.

    Buy on MyFontsFlesch 74

    Color Palette

    9 unique colors
    21:1 AAA Light
    #ffffff
    Background· 54.00000000000001%
    #000000
    Text· 27.5%
    #fe0000
    Accent· 6.8%
    #00517d
    Primary· 4.5%
    #703836
    Secondary· 1.8%
    #46697c
    Secondary· 1.6%
    #9faeb8
    Secondary· 1.4%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    1 Resources

    0
    Scripts
    1
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    Website Identity

    linuxcommand.org

    bshotts@users.sourceforge.net
    26 years old
    Location detected: 🇺🇸 United Statesvia ip
    Register.com - Network Solutions, LLCen

    Sponsored

    Last analyzed: 26 Apr 2026 at 16:30

    Historical Analysis & Change Tracking