Exercises - The Command Line Interface (CLI)

Consider the following directory hierarchy:

What is the absolute path to the directory named lab01?
/users/student/steve/lab01
If one is in the directory named jon, give a single command, using a relative path, to change to the directory named lab02.
cd ../steve/lab02
Give the output seen if one is in the steve directory and types pwd.
/users/student/steve
What will the output be if one types ls while in the root directory?
```
bin
etc
lib
users
usr
```
One is currently in the jon directory. What directory will one be in after the following command executes?
```
cd ../..
```
users
Suppose one is currently in the student directory.
1. Without leaving this directory, what sequence of commands can be used to create a new directory named lab03 in the jon directory, then create a new text file named greeting.java in this new directory and open it for editing? Finally, what additional command will rename greeting.java to HelloWorld.java?
```
mkdir ./jon/lab03
nano ./jon/lab03/greeting.java

mv ./jon/lab03/greeting.java ./jon/lab03/HelloWorld.java
```
2. What sequence of commands will reverse the changes just made?
```
rm ./jon/lab03/greeting.java
rmdir ./jon/lab03
```
Suppose the lab01 directory contains a file named CoolTool.java. Give two commands for copying this file to the lab02 directory. The first should use only relative addressing, while the second should use absolute addressing, rename the file to Tool.java, and delete the original file, all at the same time.
```
cp CoolTool.java ../lab02

mv CoolTool.java /users/student/steve/lab02/Tool.java
```