Bash Shell Scripting- Simple Shell Script to know the usage of Variables in Bash Shell Scripting

The video tutorial explains how to use variables and commands in shell scripting to check Docker status and version. It covers filtering command output using grep, cut, and awk, and demonstrates how to extract specific information. The tutorial also guides on writing a shell script to automate these tasks, including assigning command results to variables and printing them using echo.

What is the primary purpose of the script discussed in the video?

• To print Docker status and version

• To remove Docker from the system

• To install Docker on a system

• To update Docker to the latest version

Which command is used to filter lines containing a specific string?

• cut

• awk

• grep

• tr

What is the advantage of using the awk command over grep and cut?

• awk is easier to use than grep and cut

• awk is more secure than grep and cut

• awk is faster than grep and cut

• awk can search and extract fields in one step

How can you remove unwanted characters from a command output?

• Using the awk command

• Using the tr command

• Using the grep command

• Using the cut command

Why is it unnecessary to use grep when extracting the Docker version?

• The version information is on multiple lines

• The version information is on a single line

• grep cannot be used with Docker commands

• awk is the only command that works with Docker

What is the first line of a shell script typically used for?

• To set execution permissions

• To print a welcome message

• To declare variables

• To specify the script interpreter

How can you store the result of a command into a variable in a shell script?

• Using curly braces around the command

• Using the echo command

• Using parentheses around the command

• Using square brackets around the command