Class 16

Question 1

What does the ? meta-character match?

Answer 1

any single character

Question 2

What does the * meta-character match?

Answer 2

Zero or more occurrences of any character

Question 3

What do the [ ] meta-characters match?

Answer 3

a single instance of any character between the brackets

Question 4

What command would you use to see all files in your current directory whose name began with “foo”, followed by another letter, followed by “.txt”?

Answer 4

ls foo?.txt

Question 5

What do you call a command whose code is part of the shell and does not exist as an executable file on disc?

Answer 5

a built-in

Question 6

Name the three ways a shell can be started.

Answer 6

login shell, interactive non-login shell, non-interactive shell

Question 7

What is the name of the startup file that we will be using in this course, which contains commands that are run when you first log in?

Answer 7

.bash_profile

Question 8

Where are the startup files located?

Answer 8

in your home directory

Question 9

What command would you use the find out more about a built-in command?

Answer 9

help

Question 10

Are the commands in .bash_profile run when you create a subshell using bash?

Answer 10

no