Bash Shell Scripting - Reading Files Using "for"

The video tutorial explains how to use a for loop to read files line by line. It starts with a basic example of iterating over numbers and then demonstrates reading a file using a for loop. The tutorial also covers implementing conditional logic within the loop and introduces command substitution techniques. The video concludes with potential applications of for loops in processing various file types.

What is the purpose of the shebang line in a script?

• To indicate the script's interpreter

• To specify the script's author

• To define the script's file type

• To set the script's execution permissions

In a simple for loop iterating over numbers, what happens during each iteration?

• The loop variable is multiplied by 2

• The loop variable is divided by 2

• The loop variable is assigned the next number

• The loop variable is reset

What is the role of the 'cat' command in reading files with a for loop?

• To rename a file

• To display the contents of a file

• To delete a file

• To create a new file

How does command substitution work in a for loop?

• It executes a command and uses its output

• It replaces a command with a variable

• It swaps two commands

• It deletes a command

What happens when a specific line in a file matches a condition in a for loop?

• The loop continues without any action

• The loop restarts from the beginning

• The loop pauses for a specified time

• The loop skips the line

What is the effect of using 'exit' in a for loop?

• It skips the current iteration

• It pauses the loop

• It restarts the loop

• It terminates the loop

Why is it important to know what to do with each line read from a file?

• To ensure the file is not corrupted

• To determine the next file to read

• To count the number of lines in the file

• To perform specific actions based on the line's content