CS190 Lab 8 - Vim, Sublime, & Tmux

The purpose of this lab is for you to learn the basics of Vim, Sublime Text, and Tmux. After you finish this lab, you will have a much better understanding of text editing for programming, as well terminal multiplexing.

Before starting the lab, OPEN THE REFERENCE SHEET

The Magic Command

cd; curl -S https://raw.githubusercontent.com/PurdueCS190/lab8/master/init.sh | bash

Part 1 - Vim

NOTE: Don't do this if you already have a .vimrc customized to your liking!!!

wget -O ~/.vimrc https://raw.githubusercontent.com/PurdueCS190/lab8/master/vimrc

Part 1 - Editing example files with vim

NOTE: DO NOT USE INSERT MODE UNLESS TOLD TO DO SO. USE THE COMMANDS DESCRIBED TO FIX THE ERRORS.

---

errors.txt

This file contains duplicate lines, words, and misspellings that need to be fixed. You need to edit this file using Vim and fix the errors.

You can find the commands in the Vim Cheatsheet.

This is the time you should probably open up the Vim Cheatsheet mentioned in the beginning of the lab :)

1. Open errors.txt in Vim

   vim errors.txt

   

   The file originally looks like the above text. As you can see there are multiple errors in this text file, such as lines 3-6 being duplicated and lines 8 having a mispelled 'I'.

2. Remove duplicate lines

   BIG HINT: The commands listed here correspond to commands that can be found in the Vim Cheatsheet, most are under the section "Editing Text in Command Mode"

   GOAL:       Remove duplicated lines appearing on lines 4 and 5.
   COMMANDS:   delete current line, delete n lines.
   

   

3. Remove duplicate words

   GOAL:       Remove duplicated words appearing on line 5
   COMMANDS:   delete word, delete n words
   

   

4. Fix misspellings

   GOAL:       Remove characters causing misspellings on lines 6 and 7.
   COMMANDS:   Remove character
   

   

5. Save the file and quit

   :wq
   

---

jump_around.txt

This is a really long file...actually a book called The Young Engineers. There are little messages interleaved in the middle.

1. Open jump_around.txt in Vim.
2. Press G (shift and g at the same time) to go the very end of the file
3. Type gg to go to the beginning of the file
4. Type :462 to go to line 462. Mark down the name of Chapter II found on this line.
5. Type :3403 to go to line 3403.
6. Type $ to go to the end of line 3403.
7. Type ^ to go to the beginning of line 3403.
8. Hit i to go into insert mode.
9. Add the word "BoilerMake" to the end of this line.
10. Save and quit this file. HINT: (w)rite and (q)uit

Part Two - Editing the .vimrc

What is the .vimrc?

The vimrc file contains optional runtime configuration settings that get loaded each time Vim is run. This means that what ever the settings you have in this file, they will be executed when Vim is started.

For part two we will add a couple of settings to your .vimrc that maybe useful.

1. Open ~/.vimrc with Vim

   vim ~/.vimrc

2. Jump to the bottom of the file using Shift + g.

3. Jump to the end of the line by typing $.

4. Press o, this will put you in Insert Mode and add a new line under your cursor. This is one of vim's MANY handy shortcuts.

5. On this newly created line, in insert mode(you should be from the last step), paste the code below on that line.

   If you try and paste code without being in Insert Mode, each character that is part of the pasted string will act as input to Vim.

   e.g., if you paste the word insert while still in Command Mode, i will trigger Insert Mode and then nsert will be written in the file.

   " Always display the current cursor position in the lower right corner of the Vim window.
   set ruler
   " Press space to clear search highlighting and any message already displayed.
   nnoremap <silent> <Space> :silent noh<Bar>echo<CR>

6. Now save the file and quit

   <ESC>
   :wq
   

7. Now open the file again in vim and you should see the current cursor position in the lower right of the window.

Part 2 - Sublime

Setup

First you need to install Sublime on your system. Run the following commands

mkdir -p ~/bin
wget http://c758482.r82.cf2.rackcdn.com/Sublime%20Text%202.0.2%20x64.tar.bz2
tar jxf Sublime\ Text\ 2.0.2\ x64.tar.bz2 -C ~/bin
PATH=$PATH:$HOME/bin/Sublime\ Text\ 2

Run Sublime with sublime_text &!

If you want this to work permantetly, add export PATH=$PATH:$HOME/bin/Sublime\ Text\ 2 to the end of your .zshrc.

In this part of the lab you are given two files animals.txt and animal-stats.rb. Your goal is to use Sublime to edit animals.txt, so you can insert it into animal-stats.rb, so that it can run properly.

Multiple Cursors & Animals.txt

Animals.txt is a huge list of animals, you need to convert it into an Array of Strings like so.

to

Once you have this array, you need to copy and paste it into animal-stats.rb like so.

Then you can run ruby animal-stats.rb!

Part 3 - Tmux

For part 3 of this lab you are to setup 2 tmux sessions, one called rubyAndJava and one called vimtutor. Here is an example of what you should see when you run tmux ls.

For these 2 sessions you need to make them look like they do in the screenshots below.

The Task

First thing first, you need to rename this session to rubyAndJava.

Window #1

This window has 2 panes split horizontally with the top one being split again vertically. The top pane has a vertical split between two vim sessions with attribute.rb and core.rb, and the bottom one should just contain your default shell.

Window #2

This window has only 1 pane with a vim session open with a vertical split of PtrClassicDefaultHeader.java and PtrFrameLayout.java.

After completing this, de-attach this session!! (Check cheatsheet for this)

Part 4 - Course Eval (Optional)

Please take some time this week and next to fill out your course eval.

• http://www.purdue.edu/eval

We've also created our own course survey. It will make the course better:)

• http://goo.gl/forms/BVj4IBHeuo

Grading

Have a terminal open in the lab directory when you call your TA over.

1. Check that errors.txt has no more errors.

2. grep for BoilerMake in the jump_around file

grep "BoilerMake" jump_around.txt

3. Check output of ruby program (ruby animal-stats.rb), output should look like this

There are 591 animals with an average letter count of 10.
Here are the beginning letter frequency of all of the animals:
"A"=>51
"B"=>66
"C"=>54
...

4. Instruct the student to attach the tmux session from earlier (should be called rubyAndJava), then de-attach