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lab-report-1-week-2.md

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Lab Report 1

Logging into a course-specific account on UCSD ieng6 servers

Step 1: Installing VSCode

  • Go to the VSCode website linked here
  • Follow all the installation instructions for your OS
  • Upon successful installation, open VSCode. You should see something like this:

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Step 2: Remotely Connecting

If on a Windows device, first install OpenSSH here and then proceed.

  • Look up your course account here
  • Open a terminal and type: ssh (account name)@ieng6.ucsd.edu at the prompt
  • Enter your password when prompted, and continue. Once logged in, your terminal should look similar to this:

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Step 3: Trying Commands

  • Try various commands such as ls, pwd, and cd like so:

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Step 4: Moving Files with scp

  • You can move files from the client to the server with the scp command: type scp (file_name) (account name)@ieng6.ucsd.edu:~/ in the terminal
  • Enter your ssh password at the prompt
  • Upon logging into the server, you should find your file in the home directory, as pictured below:

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Step 5: Setting Up an SSH Key

  • On the client computer, type ssh keygen in the terminal
  • Enter the file where the key should be saved, or keep the default file path
  • Leave the password field blank to avoid entering a password for future logins

(Windows users must follow the additional directions found here). Next, ssh into the server and execute the following actions:

  • Make a new .ssh directory with: mkdir .ssh
  • Log out of the server and move the public key to the server's newly created .ssh directory with the following command:

scp (file path used to store public key) (account name)@ieng6.ucsd.edu:~/.ssh/authorized_keys

You may then log in to the server without a password like so:

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Step 6: Optimizing Remote Running

To optimize running commands and files remotely, you may chain commands together.

  • Using quotations around commands will run them on the server. For example, the command ssh (account name)@ieng6.ucsd.edu "ls" will log you into the server and list the directories present
  • Using semicolons allows you to run multiple commands at the same time

Below is an example of optimizing the copying, compiling, and running of the Java file WhereAmI.java:

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