Linux and Eclipse

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Linux and Eclipse
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Access to Labs

• You should be able to get into the labs in Engr
  213 214
• Go to the CS office, MEC302J, if you cant get
  in.

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Goals

• Intro to Linux
• I'll show you how to write another program using
  eclipse.
• You'll write a Java program that outputs your
  favorite quote.
• Put your name in the comments in the program

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Linux Operating System

• Lets the user manage files and programs.
• Can interact through bash shell
• Get a shell by right-clicking on the desktop and
  selecting Konsole
• Many layers of shells in system.

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Linux Operating System

• Basic command format
• Command -options args
• Examples
• ls
• ls -l
• ls -l p

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Java and eclipse

• We'll use eclipse to write programs.
• There are a lot of other editors you could use.
• On onyx get to eclipse from command line
• eclipse command

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Edit and Execute a Program(Class)

• Create project for your program.
• New?Java Project
• Just use the default package.
• Create a Java class.
• Press the (C) button to create a class.
• Edit the program.
• Save the class, which also compiles it.
• To execute the program, right-click on the
  editing area.

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Change Your Password

• The command is passwd
• In the lab first do ssh -Y onyx
• You will have to see me to change it, if you
  forget it.
• Change it to something you can remember

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Question
What are the steps to writing a Java program,
assuming you are logged in and you have opened a
konsole?
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Linux
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More Linux Commands

• mkdir make directory
• cd change directory
• echo echos a line. Use to make a file.
• cat lets you see a file's contents.
• cp file1 file2 copies file1 to file2
• mv file1 file2 renames file1, as file2
• rm file removes a file
• mv file1 directoryA moves file1 to directoryA

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More Linux Commands

• cd .. - change to directory above
• rmdir remove directory, must be empty

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Question
What Linux command would you use to move a file
called Hello.java into a directory called myStuff?