Bash Shell Scripting - "printf" Statement - Part 2

This video tutorial covers advanced formatting techniques using the printf statement. It begins with an introduction to using tabs for formatting reports, followed by a detailed explanation of handling floating numbers and controlling decimal places. The tutorial then explores aligning numbers and controlling width in printf. Finally, an example script is demonstrated to consolidate the learning. The video emphasizes the similarities of printf formatting across different programming languages like C, Java, and C++.

What is the primary purpose of the printf statement as introduced in the video?

• To create loops

• To generate random numbers

• To format and print data

• To handle exceptions

What does the tab option in printf allow you to do?

• Change text color

• Insert tabs at desired locations

• Align text to the center

• Insert spaces between words

How does printf handle floating numbers by default?

• It rounds them to the nearest integer

• It displays them with six decimal places

• It ignores them

• It converts them to strings

What does the .2 in printf formatting specify?

• The number of characters in the string

• The number of spaces before the number

• The number of lines to print

• The number of decimal places to display

What is the effect of specifying a width in printf formatting?

• It changes the font size

• It aligns the text to the left

• It sets the total number of characters for the output

• It adds a border around the text

How can you align numbers to the right using printf?

• By adding spaces manually

• By using the %l specifier

• By specifying a width

• By using the %r specifier

In the practical example, what is the purpose of the expr command?

• To format a string

• To print a message

• To add two numbers

• To execute a script

What does the %d format specifier in printf represent?

• A floating-point number

• An integer

• A character

• A string

What happens if you don't save the file before running a script?

• The script shows an error message

• The script runs with the previous saved version

• The script runs with the current changes

• The script doesn't run at all

What is the significance of using %f in printf?

• It formats floating-point numbers

• It formats characters

• It formats strings

• It formats integers