IT 244: Introduction to Linux/Unix - Answers to Class 20 Ungraded Quiz

IT 244: Introduction to Linux/Unix
Answers to Class 20 Ungraded Quiz

What command would you run to see the last 20 commands you ran at the command line?
```
history 20
```
What is the PATHNAME of the file that, by default, stores the commands you have run in a file so that they will be remembered for the next time you log in?
```
~/.bash_history
```
What command would you use to edit the last command to run, change it and run it again?
```
fc
```
What is the name of the library of procedures that allows you to edit the command line?
```
the Readline library
```
Name the three things that can be completed at the command line by hitting Tab.
```
pathnames, commands, shell variables
```
What do you call a shortcut that is used to run a command?
```
an alias
```
What would you write at the command line to create the alias ghdir which changed directory to MY home directory?
```
alias ghdir='cd ~ghoffman'
```

Can you write a function on a SINGLE command line?

yes if every command is followed by a ;, including the last