Linux Usage

 The exact percentage of Linux servers in production depends on the target environment, ranging from ~50–65% in general server markets to over 90% in cloud and containerized environments.

Overall Server Market Share

• Server OS Market: Linux accounts for 51% to 64% of all active server operating systems globally, with Windows Server holding the majority of the remaining share.

• Enterprise Servers: Within large enterprises, Linux deployment sits around 65%, led by enterprise distributions like Red Hat Enterprise Linux (RHEL), Ubuntu Server, and SUSE.

Production Workloads by Domain

Domain / Environment	Linux Share	Key Note
Public Cloud Workloads	85% – 90%	Linux powers ~92% of VMs on GCP, ~83% on AWS, and >60% on Azure.
Containers & Kubernetes	96%+	Virtually all containerized production environments (Docker/K8s) run on Linux node instances.
Web Servers	~62%	Among public web servers with a detectable OS, Linux holds over 62% market share (Ubuntu and Debian leading).
High-Performance Computing (HPC)	100%	Every top 500 supercomputer in the world runs on Linux.

Enterprise Distribution Breakdown

Among enterprise Linux deployments, the leading distributions are:

1. Red Hat Enterprise Linux (RHEL): ~43% market share (dominant in Fortune 500 and regulated industries).

2. Ubuntu Server: ~34% market share (dominant in public cloud and AI/ML workloads).

3. Debian & SUSE/SLES: Combined ~27% market share (popular in manufacturing, retail, and web infrastructure).

Assignment #1 Due 9/9/26

 Assignment #1 Due 9/9/26

Please email your gmail address so I can permission you on projects.

Create a Linux shell script program that captures

Name, Address, City, State, zip

Investor risk : High, Medium, Low.

Validate State 2 positions

Validate zip for numbers

Validate Investor risk for High, Low, Medium

Store it in text file called Investor_profile.txt

Send code and text file to my email john.iacovacci@uconn.edu

https://googleclouduconn.blogspot.com/p/linux.html

Thanks

Adjunct Professor John Iacovacci

University of Connecticut, Stamford

John.Iacovacci@uconn.edu

Metrics

 Build is going on now. Have company and security tables created and python code to access and insert data into SQL tables.

Asked Gemini to pick the key fields from a list of yahoo fields API provided and it came up with this:

1. The "Growth Drivers" (Highest Impact)

For a mega-cap tech giant like Microsoft, these fields are the primary engine of price movement.

• Forward EPS ($18.85$) & Forward PE ($20.52$): Markets trade on the future, not the past. Your data shows a Forward EPS higher than the Trailing EPS ($15.99$), indicating analysts expect growth. If this Forward EPS is revised upward, the price typically follows.
• Earnings Growth ($59.8\%$) & Revenue Growth ($16.7\%$): These are the "speedometers." Because Microsoft is heavily invested in AI and Cloud (Azure), investors watch these percentages to see if the massive capital expenditures are paying off in actual sales and profits.
• Target Mean Price ($595.99$): This represents the "fair value" consensus from 53 analysts. Since the current price ($386.87$) is significantly below this target, it suggests a "Strong Buy" sentiment, which can attract institutional buying.

2. The "Efficiency & Profitability" Metrics

These fields tell investors how well the company is managed and if it can sustain its growth.

• EBITDA Margins ($57.38\%$): This is incredibly high for a company of this size. It shows that for every dollar of revenue, Microsoft keeps over 57 cents before taxes and interest. High margins protect the stock price during market downturns.
• Return on Equity ($34.39\%$): This measures how effectively management uses shareholder money to generate profit. A ROE above $30\%$ is considered elite.
• Free Cash Flow ($53.6B$): This is the actual cash left over after paying for everything, including building new data centers. High cash flow allows for the dividends and share buybacks that support the price.

---

3. Valuation & Sentiment Indicators

These help you understand if the stock is "cheap" or "expensive" relative to its history.

| Field | Value | Impact on Price |

| :--- | :--- | :--- |

| Trailing PEG Ratio | 2.26 | Measures PE relative to growth. A lower PEG is usually better; 2.26 is standard for high-growth tech. |

| Short Percent of Float | 0.79% | Very low. This means few people are betting against the stock, indicating strong market confidence. |

| Beta | 1.08 | This means the stock is slightly more volatile than the S&P 500. It moves mostly in sync with the broader market. |

Summary of Key Ratios

$Forward P/E = \frac{Current Price}{Estimated Future EPS} = \frac{386.87}{18.85} \approx 20.52$

This ratio is the "price tag." When it is lower than the trailing PE ($24.19$), it usually signals that the stock is becoming more attractive as earnings grow.

Thoughts?

I can start collecting these.

Thanks

John

Adjunct Professor John Iacovacci

University of Connecticut, Stamford

John.Iacovacci@uconn.edu

Assignment #10 due Wednesday 4/7, 4/1/2021, 4:03 PM, English, 4/1/2021, 4:03 PM

Your assigned language is: English
Classroom blog: googleclouduconn.blogspot.com

4/1/2021, 4:03 PM

Assignment #10 due Wednesday 4/7

https://googleclouduconn.blogspot.com/p/vision-example-explained.html
Build 3 python program that will use Google Vision API to scan 3 separate images

Note: need to use your own images and store them on your Google Storage Bucket

image_uri = 'gs://cloud-samples-data/vision/using_curl/shanghai.jpeg'

image_uri = 'gs://dollarsforstuff/shanghai.jpg'

Send me the output from each run of the function in an email

Assignment #9 due 3/31, 3/25/2021, 12:59 PM, English, 3/25/2021, 12:59 PM

Your assigned language is: English
Classroom blog: googleclouduconn.blogspot.com

3/25/2021, 12:59 PM

Assignment #9 due Wednesday 3/31

https://googleclouduconn.blogspot.com/p/user-authentication.html

Create an app engine process designed around example 3

Change the index.html file to incorporate your name

E.g. <h1>John Iacovacci says Hello Verified User</h1>

Add my email address as a user john.iacovacci1@gmail

Send me via email your app engine link

uconn-engr.uc.r.appspot.com



Tendai's link to Columbia Machine Learning course

http://click.sfmc.ai.engineering.columbia.edu/?qs=5b9033e9402391ef05eb52b4f7b00b94b4f048bdf0e819c13e9630f28a10dcdd6ab603e3e126729c9d031f8f46453e3cd61a2c705c25fb8d

Assignment #8 due 3/24/21, 3/18/2021, 5:31 PM, English, 3/18/2021, 5:31 PM

Your assigned language is: English
Classroom blog: googleclouduconn.blogspot.com

3/18/2021, 5:31 PM

Assignment #8 due Wednesday, 3/24

Create a text file called mydata.txt that consist of the lesson 1
shell script exercise using standard output redirection


1/20/2021, 8:58 PM

Assignment 1 due 1/27/21

https://googleclouduconn.blogspot.com/p/linux.html

Create a linux shell program to state name, major, what you want to do
and high school, favorite subject growing up, what i am passionate about

Send both code and output via email

List all lines of code

Program

# my first script
echo "Hello my name is John Iacovacci"

Copy and paste output

Output

john_iacovacci1@cloudshell:~/scripts (uconn-engr)$ ./my_profile2
Hello my name is John Iacovacci

Email to john.iacovacci1@gmail.com


https://googleclouduconn.blogspot.com/p/encrypt-and-decrypt-data-with-cloud-kms.html

Encrypt the file and email me both the mydata.txt file and the mydata.txt.enc

Assignment #6 issue, 3/8/2021, 9:25 PM, English, 3/8/2021, 9:25 PM

Your assigned language is: English
Classroom blog: googleclouduconn.blogspot.com

3/8/2021, 9:25 PM

Note: Assignment #6 issue

Need to have Google Translate API turned on in order to read data

See link below


https://googleclouduconn.blogspot.com/p/python-crud.html