How do I use these commands?

Here's a brief guide on how to use each of the mentioned commands:

pwd: To display the current directory you are in.
```
pwd
```
ls: To list files and directories. You can add options like -l for detailed information or -a to show hidden files.
```
ls -l
ls -a
```
cd: To change directories. Replace /path/to/directory with the actual path.
```
cd /path/to/directory
```
mkdir: To create a new directory. Replace new_directory with your desired directory name.
```
mkdir new_directory
```
rm: To remove a file. Use -r to remove directories recursively.
```
rm file.txt
rm -r directory_name
```
cp: To copy files. Replace source.txt and destination.txt with your file names.
```
cp source.txt destination.txt
```
mv: To move or rename files. Replace old_name.txt and new_name.txt with your file names.
```
mv old_name.txt new_name.txt
```
cat: To display the contents of a file. Replace file.txt with your file name.
```
cat file.txt
```
man: To view the manual for a command. Replace command_name with the command you want to learn about.
```
man ls
```
top: To view running processes and system resource usage. Just type:
```
top
```

You can enter these commands in your terminal to perform the respective actions. Remember to check the manual pages (man command_name) for more options and details on each command.