Homework 00

Do the following:

• Sign up for a Github username
• Open a terminal. On Mac OS X, this will be a program called Terminal in your Applications/Utilities folder. On Windows, you will likely need to download and set up a third-party program such as PuTTY. On Linux, this will be the GNOME Terminal or KDE Konsole, or the equivalent.
• At the command line within the terminal emulator, connect to the cl.linguistics.illinois.edu server using ssh. Your username is your NetID, and your password should be your NetID password. Note: to connect to the server from off campus, you may first need to connect to the campus network using an approved VPN client.

ssh yourActualNetID@cl.linguistics.illinois.edu

• At the command line on the cl.linguistics.illinois.edu server, type the following command to create the file ~/.who_am_I

echo -e "WWW\tXXX\tYYY\tZZZ" > ~/.who_am_I

• Use cat to verify that you have successfully saved your changes to .who_am_I

cat ~/.who_am_I

You should see this:

WWW XXX YYY ZZZ

• At the command line on the cl.linguistics.illinois.edu server, use the vi text editor to open the file ~/.who_am_I

vi ~/.who_am_I

• Within the vi text editor, enter insert mode

i

• Replace WWW with your last name
• Replace XXX with your first name
• Replace YYY with your netID
• Replace ZZZ with your Github username
• Within the vi text editor, exit insert mode by pressing the Escape key on your keyboard
• Save your changes to the file

:w

• Exit vi

:q

• Use cat to verify that you have successfully saved your changes to .who_am_I

cat ~/.who_am_I

You should see something like this (except with your name and IDs):

Schwartz Lane lanes dowobeha

• Use cat, tail, cut, and pipes to verify that you have successfully recorded your first name in .who_am_I

cat ~/.who_am_I | tail -n 1 | cut -f 2

You should see something like this (except with your first name):

Lane

• Use cat, tail, cut, and pipes to verify that you have successfully recorded your last name in .who_am_I

cat ~/.who_am_I | tail -n 1 | cut -f 1

You should see something like this (except with your last name):

Schwartz

• Use cat, tail, cut, and pipes to verify that you have successfully recorded your github username in .who_am_I

cat ~/.who_am_I | tail -n 1 | cut -f 4

You should see something like this (except with your Github ID):

dowobeha

• Use cat, tail, cut, and pipes to verify that your NetID is still correctly recorded your in .who_am_I

cat ~/.who_am_I | tail -n 1 | cut -f 3

You should see something like this (except with your netID):

lanes

cat ~/.who_am_I | tail -n 1 | tr '\t' '\n' | wc -l

You should see exactly this:

4

If you see anything other than 4, or if any of the previous validation steps don’t match what you actually see, you have a problem with your file, and you will not receive credit for the assignment. The most common problem is the use of spaces instead of tabs. You must use tabs, not spaces, to separate the entries in the file.

• Disconnect from the server

exit