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Linux File Management Quiz

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Questions and Answers

Which command is used to list all the folders and files located in the current folder in Linux?

ls (correct)

mkdir

What does the slash (/) symbol represent in Linux?

The root directory (correct)

The home directory

The current folder

The parent folder

What does the 'ls /home' command do in Linux?

Lists all files and directories in the current folder

Lists all files and directories in the root directory

Lists all files and directories in the parent folder

Lists all files and directories in the home folder (correct)

What does the 'ls /home/centos' command do in Linux?

Lists all files and directories in the centos folder Signup and view all the answers

Which symbol is used to assign a command to a variable in Linux?

= Signup and view all the answers

What will be printed if the following command is executed: echo $hello?

today's date Signup and view all the answers

What does the 'grep' command do in Linux?

Find a specific line in a text and print it Signup and view all the answers

What will be the value of the variable 'now' if the following command is executed: now=$(grep Bash hello)?

The specific line containing the word 'Bash' in the file 'hello' Signup and view all the answers

What does the 'sed' command do in Linux?

Substitute a word in a file Signup and view all the answers

Study Notes

Basic Linux Commands and Concepts

The command to list all folders and files in the current directory is ls.
The slash (/) symbol denotes the root directory in Linux, serving as the starting point of the file system hierarchy.

Specific Commands and Outputs

The command ls /home displays the contents of the /home directory, which typically contains user home directories.
The command ls /home/centos lists the files and folders inside the centos user's home directory.

Variables and Outputs

The equal sign (=) is used to assign commands or values to variables in Linux.
Executing echo $hello will result in the output of the variable 'hello', which returns an empty string if 'hello' is not defined.

Tools for Text Processing

The grep command searches for specific text patterns within files and outputs matching lines.
After running now=$(grep Bash hello), the variable 'now' will hold the lines containing "Bash" from the file named "hello."

Stream Editing

The sed command is a stream editor used for parsing and transforming text in a pipeline, allowing for complex text manipulations.

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Description

Test your knowledge of Linux file management with this quiz! Learn about the ls command and how to list folders and files in different directories. Challenge yourself to identify the root directory and navigate through the file system hierarchy.