Scripting Basics

Question 1

Script

Answer 1

A program written in an interpreted language, typically associated with a shell or a compiled program.

Question 2

What does ‘&’ mean in a script

Answer 2

• Allows for multiple programs to be launched
• Tells the script it can continue without waiting for the command to finish executing

Question 3

find command

Answer 3

Find a file based on filenames, ownership, and other permissions at that file system level

Question 4

cut command

Answer 4

Extract text from a field within a file.

Question 5

Echo command

Answer 5

Display a message in the command line window.

Question 6

Arguments

Answer 6

Variables that are passed to the script. These are also called parameters

Question 7

Conditional Expressions

Answer 7

Enable a script to perform one of several actions relying on a particular condition or value of a variable

Question 8

&&

Answer 8

logical and

Question 9

||

Answer 9

logical or

Question 10

if then fi

Answer 10

• If then statement
• close with fi

Question 11

case

Answer 11

• Uses a variable, and each pattern shown before the right parenthesis is a possible value of that variable.
• If the user’s entry is equal to the value before the parenthesis, the case is run.
• Like a menu, avoid redundant nested if/then

Question 12

Loops

Answer 12

Tell the script to perform the same task repeatedly

Question 13

seq command

Answer 13

Generates a list of numbers starting from its first argument and continuing to its last one

Question 14

while loop

Answer 14

Execute as long as the condition is true

Question 15

until loop

Answer 15

Continues to execute as as its conditions is false or until the condition becomes true

Question 16

Exit Value

Answer 16

last command of the script

Question 17

Exit

Answer 17

causes the immediate termination of the script