IT 244: Introduction to Linux/Unix

IT 244: Introduction to Linux/Unix
Quiz 10 Answers

What do [ and ] mean when used in an if statement?
```
they stand for the test command
```
What are the keywords used to mark a block of commands in an if ... then statement?
```
then and fi
```
What are the keywords used to mark the SECOND block of commands in an if ... then ... else statement?
```
else and fi
```
What are the keywords used to mark the block of commands following elif?
```
then and either else or elif or fi
```
Is there any limit to the number of blocks of commands you can have in an if ... else ... elif statement?
```
no
```
In a for ... in loop, where does the loop variable get its values?
```
from the list of values following the keyword in
```
In a simple for loop, where does the loop variable get its values?
```
from the command line arguments
```
Should the loop variable in a for loop have a $ in front of it?
```
no
```

When does a while loop stop running?

when the command following while returns an exit status that is not 0

What does the break command in a loop do?
```
jumps completely out of the loop
```