W&L Computer Science Wiki - labs

ad_transfer

Anonymous (anonymous@undisclosed.example.com) — 2008-06-02T21:54:48+00:00

Transferring Files To Windows Accounts * Open a file manager window * From the “File” menu, select “Connect to Server” * Change the Service type to “Windows share” * The server is mfsacad1.wlu.edu * The domain name is ad.wlu.edu

bash

Anonymous (anonymous@undisclosed.example.com) — 2008-09-20T00:29:07+00:00

Bash Scripting Resources * Advanced Bash Scripting Guide Useful Tricks Existence of a Directory if [ -z "`ls the/directory`" ]; then echo empty; fi Getting the First Word in a String Examples, using wc wc_count=`wc -l SOMETHING | cut -d' ' -f1` or wc_count=`wc -l SOMETHING | awk '{ print $1 }'`

custom_prompt

Anonymous (anonymous@undisclosed.example.com) — 2022-01-28T16:59:00+00:00

Customizing Your Terminal's Prompt When executing interactively, bash displays the primary prompt PS1 when it is ready to read a command, and the secondary prompt PS2 when it needs more input to complete a command. Bash allows these prompt strings to be customized by inserting a number of backslash-escaped special characters.

eclipse

Anonymous (anonymous@undisclosed.example.com) — 2016-11-07T02:53:19+00:00

Eclipse Eclipse is an open source integrated development environment (IDE) for Java. More generally, Eclipse is described as “an open extensible IDE for anything and nothing in particular.” Eclipse provides a robust Java development environment that incorporates popular tools like

emacs

Anonymous (anonymous@undisclosed.example.com) — 2022-01-24T20:07:06+00:00

Emacs Emacs is a free, extensible, customizable text editor. To run on the lab machines, run emacs from the command line.

for_lab

Anonymous (anonymous@undisclosed.example.com) — 2022-01-24T19:43:45+00:00

Commands for Lab Submitting Your Code Electronically to Your Turnin Directory If you have your directories set up appropriately (i.e., your lab directory is in your cs111 directory), you should be able to run turnin labx where labx is the name of the lab you are submitting. Using this command will ensure that all your permissions are set up appropriately.

git

Anonymous (anonymous@undisclosed.example.com) — 2017-06-15T16:19:04+00:00

Git Using git: workflow

gnuplot

Anonymous (anonymous@undisclosed.example.com) — 2011-05-01T21:49:18+00:00

Gnuplot Data Files A typical Gnuplot data file consists of lines of text, where each line has two numbers, representing an x-value and a y-value. Here is a Gnuplot data file called “bars.dat”, followed by an explanation of its contents: # number of days in each month of 2010 1 31 2 28 3 31 4 30 5 31 6 30 7 31 8 31 9 30 10 31 11 30 12 31

home

Anonymous (anonymous@undisclosed.example.com) — 2024-06-19T16:31:47+00:00

Linux Lab Resources For information about using our Linux machines in Parmly 405 and 413, see the links in the sidebar. We need to refactor the Wiki's organization.

idle

Anonymous (anonymous@undisclosed.example.com) — 2009-03-03T19:24:30+00:00

IDLE IDLE is the Python development environment. Common Problems Can't Open IDLE You need to “kill” all the idle processes. A dangerous shortcut is pkill python It will give you a warning message but usually works Or, you can say ps -ax Which shows you all (-a) the processes. Then, kill the process by their ids (PID)

java

Anonymous (anonymous@undisclosed.example.com) — 2015-10-26T22:46:08+00:00

Java * Primary Java Site * Java SE 8 General documentation * Java Code Visualizer Editors gedit, emacs, and Eclipse are installed on the Linux machines. There are other IDEs available, such as NetBeans and BlueJ that you may want to try. You can install jEdit (which I use) on your own computer and use the ftp plugin to allow you to easily edit your files on the CS server.

java_variable_scope

Anonymous (anonymous@undisclosed.example.com) — 2009-09-24T17:51:23+00:00

Java Variable Scope Analogy: A Passenger on an Airplane This analogy was developed in response to a student's question about when to use this.variable and when to use variable within a class's constructor: Java “looks” for variables in a similar way to how you look for a magazine when you're on an airplane. First, you look in the seat pocket because that's closest to you, then in your carry on under the seat, then the carry on in the overhead compartment.

jedit

Anonymous (anonymous@undisclosed.example.com) — 2022-01-24T20:04:02+00:00

jEdit jEdit is a text editor that has nice syntax highlighting and lets you do a good bit of stuff. To run jEdit, type jedit from the shell (Linux terminal).

latex

Anonymous (anonymous@undisclosed.example.com) — 2012-04-24T20:19:48+00:00

LaTeX and BibTeX LaTeX is a document preparation system for high-quality typesetting. It is often used for scientific and technical papers. The idea behind LaTeX is that the author should concentrate on the content and the document designer should concentrate on the appearance of document. This separation of concerns is similar to

pair_programming

Anonymous (anonymous@undisclosed.example.com) — 2022-03-15T01:34:31+00:00

Pair Programming Copying to Your Pairs' Directory If you have your directories set up appropriately (i.e., your lab directory is in your cs111 directory), you should be able to run pairturnin labx partnerusername where labx is the name of the lab you are submitting and

postgresql

Anonymous (anonymous@undisclosed.example.com) — 2017-07-25T16:22:14+00:00

PostgreSQL Help SQL in PostgreSQL Select Statements Returns the results as a virtual table. General format: SELECT c0_name, c1_name, ..., cn_name FROM table1_name, table2_name, ..., table_name [ WHERE condition ]; You can use * to mean all columns in the table. Likely, you will want to specify only the columns you want to appear in your results.

remote_access

Anonymous (anonymous@undisclosed.example.com) — 2026-01-23T17:53:33+00:00

Remote Access You can log into the Computer Science lab machines remotely, if you have ssh on your computer. SSH (secure shell) is a network protocol that allows you to remotely connect to other computers run your programs from there. If you want to run graphical applications on the Linux machines but interact with them on your computer (you probably do!), you'll need to run an X server and set up X forwarding.

sidebar

Anonymous (anonymous@undisclosed.example.com) — 2023-04-25T13:53:07+00:00

Labs Navigation * Basic Unix Commands * Intermediate Unix Commands * Commands for Lab * Pair Programming * Remote Access * Transferring Files * Bash Scripting Hints * Customizing Your Prompt * Software * Java * Emacs * jEdit * PostgreSQL * xv * Eclipse * Thunderbird * Latex and Bibtex * IDLE * Gnuplot * Git * CSCI397 Tools

software

Anonymous (anonymous@undisclosed.example.com) — 2015-09-29T19:03:42+00:00

Using Software on the Lab Machines * Subversion * PostgreSQL * Using xv

ss_javanotes

Anonymous (anonymous@undisclosed.example.com) — 2009-09-24T19:43:39+00:00

Professor Sprenkle's Notes on Various Java Topics Here's my collection of notes about various Java topics. (I'm just getting started, as you may be able to tell.) Java Variable Scope Analogy: a Passenger on an Airplane

subversion

Anonymous (anonymous@undisclosed.example.com) — 2022-01-24T20:11:00+00:00

Subversion :!: We are no longer actively supporting Subversion. * Subversion Cheat Sheet * Tutorial using Subversion in Eclipse Project Manipulation Project Directory Structure Organize your code to import into the following structure: myproject/ myproject/branches/ myproject/tags/ myproject/trunk/ myproject/trunk/dir1/ myproject/trunk/file1 ...

thunderbird

Anonymous (anonymous@undisclosed.example.com) — 2009-08-27T20:17:57+00:00

Thunderbird Thunderbird is an email client. You can use Thunderbird to access your W&L email. It can be found under the Applications Menu -- Internet -- Thunderbird Email Configuration Create a new account, type: email. Under Server Settings:

transfer_files

Anonymous (anonymous@undisclosed.example.com) — 2024-05-01T17:13:43+00:00

Transferring Files To/From Your Linux Account To/From Personal Machines Mac/Linux scp: Secure CoPy If you use Linux or Mac at home, you can Secure CoPy or scp your files to and from the Linux machines. scp works similar to the cp command: scp

unix_basics

Anonymous (anonymous@undisclosed.example.com) — 2024-09-03T20:34:28+00:00

Basic Unix Commands Unix has a lot of useful commands. If you want to find out more information about any of these commands, use the man command, which stands for manual. For example, to find out more about the ls command, use > man ls Directory Access/Manipulation

unix_intermediate

Anonymous (anonymous@undisclosed.example.com) — 2024-09-05T17:21:50+00:00

Intermediate Unix Commands This page contains just a teaser of some helpful commands. You should use man or search for more information about the commands, e.g., what arguments and flags you can use to customize the command. Permissions UNIX organizes permissions by user, group, and others. There are three different permissions available: read, write, and execute

xv

Anonymous (anonymous@undisclosed.example.com) — 2008-04-27T03:30:04+00:00

Using xv xv is a useful tool for editing images and capturing your screen. To open xv, use the command > xv & Screen Captures * Right click on the window with the fishes that pops up. * You should get an “xv controls” window that looks like: