Shell Scripting Quiz: Test Your Shell Basics

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Questions and Answers

What is the purpose of executing the command 'chmod u+x Emp1.sh'?

To check the file permissions of Emp1.sh

To delete the Emp1.sh file

To view the contents of Emp1.sh

To change the mode of the user to executable (correct)

What does the command './Emp1' do?

Checks the permissions of the Emp1 script

Deletes the Emp1 script

Opens the Emp1 script for editing

Executes the Emp1 script (correct)

What does it indicate if a string size is greater than 20?

The string is not empty (correct)

The string is empty

The string is a number

The string is a palindrome

In Linux, what does it mean when a file has 'rwx' permissions?

The file is readable, writable, and executable Signup and view all the answers

What does the condition '5 is not greater than 2' evaluate to?

False Signup and view all the answers

What does the command 'ls' do in Linux?

Lists all files and directories in the current directory Signup and view all the answers

How can you indicate that a file is a shell script?

Change mode to executable./Script.sh Signup and view all the answers

What command will print only the names of current users?

Print only names of current users Signup and view all the answers

How would you wait for the user to input data from the keyboard in a shell script?

Print please type a line Signup and view all the answers

What is the condition to successfully execute cmd2 after ensuring that hello.txt exists?

If hello.txt exist it will successfully execute otherwise fail Signup and view all the answers

How would you indicate the end of an if statement in a shell script?

Indicate the end of if statement Signup and view all the answers

What construct in shell scripting is similar to 'elseif' in C++?

Nested if statement Signup and view all the answers

How can a file be indicated as a shell script?

Setting the executable mode using 'chmod +x' Signup and view all the answers

What will be printed after successfully removing all files in the current directory?

All files successfully removed Signup and view all the answers

How can the end of an if statement be indicated in a shell script?

Using 'fi' Signup and view all the answers

What does the command 'ls' do in Linux?

List all files and directories Signup and view all the answers

What construct in shell scripting is similar to 'elseif' in C++?

'elif' Signup and view all the answers

In a shell script, what does the condition '5 is not greater than 2' evaluate to?

True Signup and view all the answers

In shell scripting, what is the purpose of the command 'chmod u+x Emp1.sh' followed by './Emp1'?

To change the file permissions to allow the file owner to execute the script, and then execute the script Signup and view all the answers

If a string size is greater than 20 characters in shell scripting, what will be the result of evaluating the expression '5 is not greater than 2'?

True Signup and view all the answers

When using a conditional statement in shell scripting, what construct is similar to 'switch' in C++?

case Signup and view all the answers

What does it indicate if a string is not empty in shell scripting?

The string contains at least one character Signup and view all the answers

When executing a shell script using './Emp1', what does the './' represent?

The current directory Signup and view all the answers

What is the purpose of printing numbers from 0 to 9 in shell scripting?

To demonstrate looping and iteration Signup and view all the answers

Study Notes

Understanding Shell Scripting Commands

The command chmod u+x Emp1.sh gives execute permissions to the owner of the file Emp1.sh, making it a executable file.
The command ./Emp1 executes the shell script file Emp1, which is in the current directory.

Understanding File Permissions

When a file has 'rwx' permissions, it means the owner has read, write, and execute permissions.

Conditional Statements

The condition '5 is not greater than 2' evaluates to false.
The construct elif is similar to 'elseif' in C++.

Working with Files and Directories

The command ls lists the files and directories in the current directory.
A file can be indicated as a shell script by giving it execute permissions using chmod u+x.
The command who prints the names of current users.

Input and Output

The command read is used to wait for the user to input data from the keyboard in a shell script.

Conditional Statements and File Existence

The condition to successfully execute cmd2 after ensuring that hello.txt exists is if [ -f hello.txt ]; then cmd2; fi.
The end of an if statement is indicated by fi.

String Operations

If a string size is greater than 20 characters, it may indicate a specific condition or action in a shell script.

Miscellaneous

When a file is removed using the rm command, the output is usually empty, indicating successful removal.
The './' in './Emp1' represents the current directory.
There is no direct equivalent to 'switch' in C++ in shell scripting, but case statements are used for similar purposes.
A non-empty string is indicated by a value of true in a conditional statement.
The purpose of printing numbers from 0 to 9 in shell scripting can be for looping or iteration.

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Description

Test your knowledge of shell scripting basics with this quiz. Questions cover topics such as printing today's date, displaying login shell, listing current users, changing file permissions, and user input handling.

Shell Scripting Basics Quiz

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Questions and Answers

What is the purpose of executing the command 'chmod u+x Emp1.sh'?

What does the command './Emp1' do?

What does it indicate if a string size is greater than 20?

In Linux, what does it mean when a file has 'rwx' permissions?

What does the condition '5 is not greater than 2' evaluate to?

What does the command 'ls' do in Linux?

How can you indicate that a file is a shell script?

What command will print only the names of current users?

How would you wait for the user to input data from the keyboard in a shell script?

What is the condition to successfully execute cmd2 after ensuring that hello.txt exists?

How would you indicate the end of an if statement in a shell script?

What construct in shell scripting is similar to 'elseif' in C++?

How can a file be indicated as a shell script?

What will be printed after successfully removing all files in the current directory?

How can the end of an if statement be indicated in a shell script?

What does the command 'ls' do in Linux?

What construct in shell scripting is similar to 'elseif' in C++?

In a shell script, what does the condition '5 is not greater than 2' evaluate to?

In shell scripting, what is the purpose of the command 'chmod u+x Emp1.sh' followed by './Emp1'?

If a string size is greater than 20 characters in shell scripting, what will be the result of evaluating the expression '5 is not greater than 2'?

When using a conditional statement in shell scripting, what construct is similar to 'switch' in C++?

What does it indicate if a string is not empty in shell scripting?

When executing a shell script using './Emp1', what does the './' represent?

What is the purpose of printing numbers from 0 to 9 in shell scripting?

Study Notes

Understanding Shell Scripting Commands

Understanding File Permissions

Conditional Statements

Working with Files and Directories

Input and Output

Conditional Statements and File Existence

String Operations

Miscellaneous

Studying That Suits You

Description

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