You are required to write a Bourne Again Shell Script (bash) to manage a menu-driven program.
When executed the user should be presented with a menu with four (1) options:
Print the following user information: the home directory, print files and folder in column format, user id, login shell together with the current date and time.
Generate 5 random numbers between 0 and 100 and display the generated random numbers.
Print out the highest and the lowest numbers of the generated random numbers.
Exit the program.
Answers
Certainly! Here's a sample Bourne Again Shell Script (bash) that implements the menu-driven program you described:
bash
Copy code
#!/bin/bash
# Function to display the menu
display_menu() {
echo "Menu:"
echo "1. Print User Information"
echo "2. Generate Random Numbers"
echo "3. Print Highest and Lowest Numbers"
echo "4. Exit"
}
# Function to print user information
print_user_info() {
echo "User Information:"
echo "Home Directory: $HOME"
echo "Files and Folders:"
ls -C
echo "User ID: $UID"
echo "Login Shell: $SHELL"
echo "Current Date and Time: $(date)"
}
# Function to generate and display random numbers
generate_random_numbers() {
echo "Generated Random Numbers:"
for ((i=1; i<=5; i++))
do
random_num=$((RANDOM % 101)) # Generate random number between 0 and 100
echo $random_num
done
}
# Function to print highest and lowest numbers from generated random numbers
print_highest_lowest() {
echo "Highest and Lowest Numbers:"
highest=$(sort -n | tail -1)
lowest=$(sort -n | head -1)
echo "Highest: $highest"
echo "Lowest: $lowest"
}
# Main program
while true
do
display_menu
echo "Enter your choice:"
read choice
case $choice in
1)
print_user_info
;;
2)
generate_random_numbers
;;
3)
generate_random_numbers | print_highest_lowest
;;
4)
echo "Exiting the program..."
exit 0
;;
*)
echo "Invalid choice. Please try again."
;;
esac
echo
done
To run the script, save it in a file (e.g., menu_script.sh), make it executable (chmod +x menu_script.sh), and then execute it (./menu_script.sh). The script will present the menu options, and you can choose an option by entering the corresponding number.
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Related Questions
Prebuilt colors from a document are called
Answers
Answer:
Theme
Explanation:
Theme. a pre-built set of unified formatting choices including colors, fonts, and effects. Format. to change the appearance of text. Font.
What are the 2 types of Digital Imagery?
Answers
Answer:
vector or raster
Explanation:
What icon indicated video mode?
Av
Tv
The video camera icon
Answers
The video camera icon indicated video mode.
The video camera icon is a universally recognized symbol that indicates video mode on electronic devices such as cameras, smartphones, and video recorders. This icon usually appears on the interface of the device, usually on the screen or as a button that you can press, when you are in video mode, and it allows you to record videos.
AV and TV icons are related to audio-video and television, but they are not used specifically to indicate video mode. AV icon can be used for different purposes such as indicating the audio-video input/output of a device or indicating an audio-video format. The TV icon is used to indicate the television mode, which typically refers to the display mode of a device.
Whenever you communicate online, remember a. to delete anything you don't want to keep b. everything you put online is available forever c. to always share your personal information d. all of the above Please select the best answer from the choices provided Ο Α OB о с OD
Answers
Answer:
B
Explanation:
i just took the test
Answer:
B
Explanation:
me brain say soo
Joe is covering a music concert with more than 2,000 people in the audience. Which shooting technique should he use to capture the entire audience in one shot?
A.
Dutch angle
B.
tracking shot
C.
track in shot
D.
crane shot
E.
panning shot
Answers
Answer:
e
Explanation:
Answer:
D. Crane Shot
Explanation:
In cell K26, create a formula that counts the number times "Thunder" occurs in the columns containing "Names"
I would wanna know the Formula for this In Excel
Answers
Answer:
I1 to K2: Use a formula to link the cells. Create a formula in column L that calculates the averages for each matching category in K2:
hope it's help you plz mark as brain listFollowing are the excel formula to count the number of times "Thunder" occurs in the names column:
Excel formula to count the number of times the value occurs:Formula:
=COUNTIF(C:C,C8)
Explanation of the Formula:
The COUNTIF function in Excel is a built-in function that counts cells according to several criteria. "=COUNTIF" is how it's spelled. The "COUNTIF" is a statistical function that can be used to count the number of cells that meet a requirement, like the number of times a certain city occurs in a client list.Inside the "COUNTIF" method we pass a two-parameter, in which the first parameter selects the column and the next parameter finds the value that will occur the number of times.Find out more about the excel function here:
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10. this problem deals with computing xn, where x is real and n is integer, using an efficient number of multiplications. more exactly, we want an efficient algorithm that uses o(log n) operations of only the following:
Answers
To compute xn efficiently using a logarithmic number of operations, you can utilize the following operations .
1. Multiplication (*): The basic operation of multiplying two numbers is allowed.
2. Squaring (x^2): Squaring a number is considered a multiplication operation but with the same number used as both operands. It can be expressed as x^2 = x * x.
By utilizing these operations, you can employ an algorithm called "Exponentiation by Squaring" to compute xn efficiently. The algorithm follows a divide-and-conquer approach and can be implemented recursively or iteratively. Here's a general outline of the algorithm:
1. If n equals 0, return 1 (base case).
2. If n is even, recursively compute y = xn/2, and then return y * y.
3. If n is odd, recursively compute y = xn/2, and then return x * y * y.
By halving the exponent at each step, the algorithm achieves logarithmic time complexity, specifically O(log n). This efficiency stems from reducing the number of multiplication operations required to compute xn compared to a naive approach that performs n-1 multiplications.
Note that for negative exponents (e.g., x^-n), you can invert the result obtained using the algorithm above, i.e., compute (1/x)n.
By employing this approach, you can efficiently compute xn using only a logarithmic number of multiplication operations, satisfying the requirement of o(log n) operations.
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Which statement declares a two-dimensional integer array called myArray with 3 rows and 4 columns?
a. int[][] myArray = new int[3][4];
b. int myArray[3, 4];
c. int[] myArray = new int[4][3];
d. int[] myArray = new int[7];
Answers
The correct statement that declares a two-dimensional integer array
is: int[][] myArray = new int[3][4];
Which option correctly declares a 2D integer array named 'myArray' with 3 rows and 4 columns?Option A is the correct statement to declare a two-dimensional integer array called myArray with 3 rows and 4 columns in Java.
The statement "int[][] myArray = new int[3][4];" declares a two-dimensional integer array with the name "myArray". The first pair of square brackets "[]" specifies the number of rows, which is 3 in this case.
The second pair of square brackets "[]" specifies the number of columns, which is 4 in this case. The "new" keyword is used to allocate memory for the array. The data type of the array is "int".
Option B is incorrect because it uses comma "," to separate the dimensions, but in Java, square brackets "[]" are used.
Option C is also incorrect because it declares a one-dimensional integer array with 4 elements and then tries to specify 3 rows, which is not allowed in Java.
Option D is also incorrect because it declares a one-dimensional integer array with 7 elements, but it does not specify any rows or columns for a two-dimensional array.
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you need a storage device that has very large storage capacity, is fast, and is relatively inexpensive. which storage device will best suit your needs? a. SSD b. Hard disk c. Optical d. USB flash drive
Answers
A hard disk will best suit your needs for a storage device with very large storage capacity, speed, and relative affordability.
How does a hard disk drive store data?
A hard disk drive (HDD) uses a spinning disk coated with a magnetic material to store data in the form of binary digits (bits). The disk is read and written to by a read/write head that floats just above the surface of the spinning disk.
What are some potential disadvantages of using a hard disk drive?
While hard disk drives can provide large amounts of storage at a relatively low cost, they are not as durable as some other types of storage media, such as solid-state drives (SSDs). Additionally, hard disk drives can be susceptible to mechanical failure or data corruption, which can result in data loss.
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Problems in this exercise refer to the following instruction sequences: a. LW $1,40($2) add $2,$3,$3 add $1,$1.$2 SW \$1,20( \$21 a) Find all data dependences in this instruction sequence. b) Find all hazards in this instruction sequence for a 5 -stage pipeline with and then without forwarding. c) To reduce clock cycle time, we are considering a split of the MEM stage into two stages. Repeat Exercise b) for this six-stage pipeline
Answers
The exercise involves analyzing an instruction sequence consisting of LW (Load Word), add, and SW (Store Word) instructions. The task is to identify data dependencies and hazards in the sequence.
Additionally, the exercise explores the impact of splitting the MEM (Memory) stage into two stages on hazards in a six-stage pipeline.In the given instruction sequence, there are three instructions: LW $1,40($2), add $2,$3,$3, and SW $1,20($21). To identify data dependencies, we need to analyze the dependencies between instructions based on their data usage. In this case, we have the following data dependencies:
a) LW $1,40($2): This instruction loads data from memory into register $1. It depends on the value in register $2, as it uses it as the base address for the memory operation.
b) add $2,$3,$3: This instruction performs an addition operation and does not have any explicit data dependence on the previous instructions.
c) add $1,$1,$2: This instruction adds the values in registers $1 and $2 and stores the result in register $1. It depends on the values in registers $1 and $2.
To identify hazards in the five-stage pipeline without forwarding, we need to consider data hazards that may result in stalls or incorrect results. Hazards can occur due to data dependencies, such as read-after-write (RAW) hazards. In this case, the hazards are as follows:
a) LW $1,40($2) introduces a RAW hazard, as the subsequent instruction add $2,$3,$3 depends on the result of the load instruction.
b) add $1,$1,$2 introduces a RAW hazard, as the subsequent instruction SW $1,20($21) depends on the result of the add instruction.
When considering a six-stage pipeline with a split MEM stage, the hazards may be reduced. By splitting the MEM stage, the pipeline has more opportunities to resolve hazards by forwarding data from the earlier stages. However, the exact impact on hazards would depend on the specific design and forwarding mechanisms implemented in the pipeline.
In summary, the exercise involves identifying data dependences and hazards in an instruction sequence. The data dependences are determined by analyzing the dependencies between instructions based on their data usage. Hazards, particularly read-after-write (RAW) hazards, are identified based on the data dependences and can result in stalls or incorrect results in a five-stage pipeline without forwarding. The impact of splitting the MEM stage into two stages on hazards is also discussed.
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Why is it never a good idea to touch the lens or the LCD on your camera?
A. because the heat from your fingers will melt the LCD screen
B. because the oils from your skin can cause permanent smudging
C. because your finger will get in the way of your shot
D. because your fingernails will scratch the lens
Answers
Answer:
D. because your fingernails will scrach the lens
What do you understand by ISA? Does the external auditor follow
ISA or any regulatory body in conducting their audit? (150
words)
Answers
ISA stands for International Standards on Auditing. These standards are a set of globally recognized audit guidelines developed by the International Auditing and Assurance Standards Board (IAASB).
These standards aid in the achievement of international consistency and quality in auditing practices and provide for an objective methodology that auditors can use to measure the effectiveness of the audit process. It is relevant for both internal and external auditing.Internal auditors are in charge of verifying a company's accounts, processes, and systems. An internal auditor's function is to ensure that a company's financial data is correct, secure, and that all procedures are followed. Internal auditors should be familiar with ISA and use it to help guide their work.External auditors, on the other hand, are auditors who are not employed by the company they are auditing. External auditors must follow all ISA principles and guidelines to perform a fair and objective audit of a company's financial statements. External auditors are obliged to follow the auditing regulations and procedures of any regulatory body in addition to following ISA guidelines, as the auditing process is overseen by a number of regulatory bodies.In conclusion, the ISA provides guidelines that both internal and external auditors must follow. External auditors are required to comply with all ISA principles, regulations, and procedures in addition to the auditing guidelines of regulatory bodies.
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Which test is the best indicator of how well you will do on the ACT
Answers
Answer:
The correct answer to the following question will be "The Aspire test".
Explanation:
Aspire seems to be a highly valued technique or tool that would help parents and teachers take measurements toward another excellent 3rd-10th grade ACT assessment test.
The Aspire test measures academic achievement in five aspects addressed either by ACT quiz such as:
EnglishMathReadingScienceWriting.So that the above is the right answer.
what are the maximum and minimum values that can be represented by 1) an n-bit 2s complement number, and 2) an n-bit unsigned number?
Answers
The maximum and minimum values that can be represented by an n-bit 2s complement number are -2⁽ⁿ⁻¹⁾ to 2⁽ⁿ⁻¹⁾ - 1, while the range for an n-bit unsigned number is 0 to 2⁽ⁿ⁻¹⁾ - 1.
What are the values of 2s complement number ?The maximum and minimum values that can be represented by an n-bit 2s complement number are -2⁽ⁿ⁻¹⁾ to 2⁽ⁿ⁻¹⁾ - 1 because the 2s complement system uses the leftmost bit to signify the sign of the number. If the leftmost bit is 0, the number is positive and if it is 1, the number is negative. The range for an n-bit unsigned number is 0 to 2⁽ⁿ⁻¹⁾ - 1 because the leftmost bit is always 0, making the number positive.
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17. every time attribute a appears, it is matched with the same value of attribute b, but not the same value of attribute c. therefore, it is true that:
Answers
Multivalued dependency is a specific instance of a join dependency. When a table contains many independent multivalued properties, the condition known as multivalued dependency arises
What is multivalued dependency and what does it look like?When a table contains many independent multivalued properties, the condition known as multivalued dependency arises. As an illustration: Consider a bike manufacturer that annually manufactures each model in two colors (black and white). Bike model, year of manufacture, and color.With only two sets of values involved, or a binary join dependency, a multivalued dependency is a specific instance of a join dependency.Multiple rows in a table are referred to as having an MVD, or multivalued dependency. As a result, it suggests that there are numerous other rows present in the same table. A multivalued dependency would therefore prohibit the 4NF. Any multivalued dependency would at the very least involve three table characteristics.To learn more about Multivalued dependency refer to:
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why when i do a speed test is my internet download speed slower
Answers
Answer:
maybe because you're using your wifi on the speed test haha.
Explanation:
These 2 questions PLEASEEE (:
Answers
Answer:
on the first one pixels on the second i think it is feathering
the process of ______________ requires that each user must log in with a valid user name and password before gaining access to a user interface.
Answers
The process of authentication requires that each user must log in with a valid user name and password before gaining access to a user interface.
Authentication is the process of verifying the identity of a user or system entity. It is an important aspect of computer security, as it ensures that only authorized users are granted access to sensitive data or resources.
In the context of user interfaces, authentication typically involves the use of login credentials, such as a username and password, which are verified against a database of authorized users. Once the user's identity has been verified, they are granted access to the user interface and its associated functionalities.
Without proper authentication measures in place, unauthorized users could gain access to sensitive information or perform actions that could compromise the security of the system.
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Which term describes the degree to which a network can continue to function despite one or more of its processes or components breaking or being unavailable?
Answers
Answer:C Fault-tolerance
Explanation:
Answer:
fault-tolerance
Explanation:
On Edge, fault-tolerance is described as the degree to which a network can continue to function despite one or more of its processes or components breaking or being unavailable.
I hope this helped!
Good luck <3
what are the features of unix
Answers
Unix is a effective and flexible working machine that has been in use since the Seventies.
Some of its awesome features of UnixMultiuser and multitasking: Unix can assist more than one users and run a couple of procedures concurrently, making it appropriate for use in environments with many customers and complicated computing necessities.
Modular layout: Unix is designed to be modular, with a easy set of core additives that may be combined and extended to satisfy exclusive computing needs. This makes it clean to construct custom systems and packages the use of Unix as a foundation.
File machine: Unix has a hierarchical document machine that organizes documents and directories in a tree-like shape.
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The correct BCD code of the given Decimal number 273.98 is---------------
a.
0010 1110 0011 .1001 1100
b.
None of the above
c.
0010 0111 1011 .1001 1000
d.
0010 0111 0011 .1001 1000
Answers
The correct BCD code of the given Decimal number 273.98 is d. 0010 0111 0011 .1001 1000.
BCD (Binary Coded Decimal) is a coding system that represents each decimal digit with a four-bit binary code. To convert the decimal number 273.98 to BCD, we convert each digit separately. The BCD representation of 2 is 0010, the BCD representation of 7 is 0111, the BCD representation of 3 is 0011, and the BCD representation of 9 is 1001. The decimal point remains as it is. Therefore, the BCD code for the whole number part of 273 is 0010 0111 0011, and for the fractional part .98 is .1001 1000. Combining these parts, we get the BCD representation of the decimal number 273.98 as 0010 0111 0011 .1001 1000. Thus, option d is the correct BCD code for the given decimal number.
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A support technician uses the ping utility on a system that is online, yet no response is received. What should be allowed through a firewall, for ping to operate correctly?
Answers
Answer:
Internet Control Message Protocol (ICMP) Echo Requests
Explanation:
A system that has Windows Firewall or antivirus or other third party antivirus enabled with their configuration setting set to default, ping command from another device will not be able to see if the device with an enabled firewall is alive.
The ping command sends Internet Control Message Protocol (ICMP) Echo Request to a destination device after the destination device will reply with a Reply packet. However, by default, firewalls, such as Windows firewall blocks ICMP Echo Requests from the external network and pinging will work when the firewall is disabled or an exception is created that lets ICMP Echo Requests pass through the firewall.
The Internet Control Message Protocol (ICMP) should be allowed through a firewall, for ping to operate correctly.
ICMP (Internet Control Message Protocol) is a protocol that produces error messages to the Internet protocol address.This error reporting protocol (ICMP) is used for diagnostics and network management.Any network device using TCP/IP can send, receive, and/or process ICMP messages.In conclusion, the Internet Control Message Protocol (ICMP) should be allowed through a firewall, for ping to operate correctly.
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A(n) __________ structure is a structure that causes a statement or a set of statements to execute repeatedly.
Answers
Answer:
you cant do anything with the start of the question unless you explained more about it
Explanation:
Cuales son las 4 caracteristicas de desarrollo tecnologico especializacion integracion dicontinuidad cambio
Answers
Answer:
La tecnología es el conocimiento y el uso de herramientas, oficios, sistemas o métodos organizativos, con el objetivo de mejorar el desarrollo de los distintos procesos productivos humanos. La palabra tecnología también se utiliza para describir los conocimientos técnicos que existen en una sociedad.
La tecnología tiene efectos importantes. Por ejemplo, está en el corazón de las economías avanzadas (incluida la economía mundial actual) y se ha convertido en un componente central de la vida cotidiana y el ocio. Las innovaciones en tecnología influyen en los valores de una sociedad y, a menudo, plantean cuestiones éticas. Por ejemplo, la aparición del concepto de eficiencia en términos de productividad humana, o nuevos desafíos dentro de la bioética.
____ languages are slightly more advanced than machine languages, but less advanced than
high-level languages.
a. Compiled
b. Mnemonic
c. Interpreted
d. Assembly
Answers
Compiled languages are slightly more advanced than machine languages, but less advanced than high-level languages.
What is Compiled languages?A compiled language is a programming language whose performances are typically compilers (translators that develop machine code from reference code), and not interpreters (step-by-step executors of source code, where no pre-runtime translation assumes location).Java can be considered both a collector and an interpreted language because its source regulation is first compiled into a binary byte-code. This byte-code runs on the Java Virtual Machine (JVM), which is usually a software-based interpreter.A compiled language is a programming language where the reference code is translated into device code and the machine code is stored in a different file. A collected language tends to give the designer more control over hardware aspects like memory administration and CPU usage.To learn more about compiled language, refer to:
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Which of the following is a Reach Key on your keyboard?
O H key
OF key
O J key
O S key
Answers
Answer:J key
Explanation:I want my brainlyiest pls
Answer: 3
Explanation:
The J key.
Which are factors that go into a project plan? choose four answers
Scope
Outcome
Roles
Statement Benchmarks
Demographics
Benchmarks
This is digital design work
Answers
Answer:
The answer to this question is given below in the explanation section.
Explanation:
The four factors that go into project plan are:
ScopeOutcomeBenchmark and Role.The four factors key components of any project plan. without these factors project plan is incomplete. Because, the project has scope and output, the benchmark that is going to be achieved and role and responsibilities for doing specific tasks etc.
A project plan is a formally approved document that guides project execution and project control. They have planning assumption and decisions. They also facilitate communication.
Factors such as the goals, budget, timeline, expectation, and teamwork. The other factors includes the Scope, Roles, Statement Benchmarks and the Demographics.Hence the option A, C, D, and E are correct.
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Solve: ["Success is the sum of small efforts repeated”- R. Collier ]
Please compute for the file size of the quote above. Kindly show your solution and encode your
final answer in the yellow box and make sure it is in bytes.
Answers
create a stored procedure called updateproductprice and test it. (4 points) the updateproductprice sproc should take 2 input parameters, productid and price create a stored procedure that can be used to update the salesprice of a product. make sure the stored procedure also adds a row to the productpricehistory table to maintain price history.
Answers
To create the "updateproductprice" stored procedure, which updates the sales price of a product and maintains price history, follow these steps:
How to create the "updateproductprice" stored procedure?1. Begin by creating the stored procedure using the CREATE PROCEDURE statement in your database management system. Define the input parameters "productid" and "price" to capture the product ID and the new sales price.
2. Inside the stored procedure, use an UPDATE statement to modify the sales price of the product in the product table. Set the price column to the value passed in the "price" parameter, for the product with the corresponding "productid".
3. After updating the sales price, use an INSERT statement to add a new row to the productpricehistory table. Include the "productid", "price", and the current timestamp to record the price change and maintain price history. This table should have columns such as productid, price, and timestamp.
4. Finally, end the stored procedure.
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how to fix iphone screen that wont move when i touch it.
Answers
Answer:
Explanation:
Press and quickly release the volume up button. Press and quickly release the volume down button. Press and hold the side button
1. Restart your iPhone: This is the easiest and most common way to fix issues with your phone. Press and hold the power button until “slide to power off” appears on the screen. Slide the button to power off and then press and hold the power button until the Apple logo appears.
2. Clean the screen: Oftentimes, a dirty screen can cause it to become unresponsive. Use a dry, soft cloth to wipe down the screen, and make sure to remove any cover or case that might be interfering with the touchscreen.
3. Remove any screen protector: If you have a screen protector on your iPhone, remove it and check whether the screen starts to respond to touch. Sometimes, the screen protector is the culprit.
4. Update your iPhone: Check for any software updates available for your iPhone. Tap “Settings,” then “General,” then “Software Update” to check for any available updates.
5. Force restart your iPhone: If your iPhone is still not responding to touch, force restart it by holding down the power button and the home button simultaneously until the Apple logo appears.
6. Contact Apple Support: If none of these solutions work, it’s best to contact Apple Support or visit an authorized Apple repair center for further assistance.