IT 244: Introduction to Linux/Unix - Answers to Class 5 Ungraded Quiz

IT 244: Introduction to Linux/Unix
Answers to Class 5 Ungraded Quiz

What would you type at the command line if you wanted to see the value of the variable SHELL?
```
echo  $SHELL
```
What would you type at the command line if you wanted to know the network name of the Unix computer you were using?
```
hostname
```
Name one of the two pager programs that allow you to read a long file one screenful at a time.
```
more or less
```
If you started typing the name of a file on the command line and wanted Unix to supply the rest, what would you do?
```
hit the Tab key
```
What would you type at the command line if you wanted to find all lines in the file results.txt that contained the word "homework"?
```
grep  homework  results.txt
```
What would you type at the command line if you wanted to find all lines in the file results.txt that DID NOT contain the word "homework"?
```
grep -v homework  results.txt
```
What would you type at the command line if you wanted to see the FIRST 10 lines of the file log.txt?
```
head  log.txt
```
What would you type at the command line if you wanted to see the LAST 10 lines of the file log.txt?
```
tail  log.txt
```
What would you type at the command line if you wanted to see all the lines in the file results.txt in sorted order?
```
sort  results.txt
```
What would you type at the command line if you wanted to see all the lines in numbers.txt sorted in REVERSE NUMERIC order?
```
sort -nr numbers.txt
```