Go to here and select the download package corresponding to your OS
Open VScode, you should be at a home page like this.
Depending on the default theme setting, it could be white.
If you are on Windows, the first thing is to download a program called OpenSSH, which your computer will need to connect with computers that use the course-specific accounts of CSE 15L.
Follow the tutorial here to download OpenSSH. If you are on Mac, just skip this step.
Now you need to look up your ieng6 account name at here.
Follow the instructions there to reset your account's password, so that your ieng6 account can be activated.Take a note of your new password. It's needed for remote server login.
After resetting your password, open terminal in VScode by clicking "Terminal"-"New Terminal",and type in the following command with zz replaced by letters in your course-specific account.
$ ssh [email protected]
For all yes/no questions poping up, type yes.
e.g.:
The authenticity of host 'ieng6.ucsd.edu (128.54.70.227)' can't be established. RSA key fingerprint is SHA256:ksruYwhnYH+sySHnHAtLUHngrPEyZTDl/1x99wUQcec. Are you sure you want to continue connecting (yes/no/[fingerprint])?
Type in your new password you just reset when Password: appears, and you should have logged into your remote ieng6 server.
Note: No characters will appear when you are typing your password.
If the password is wrong it's probably because the password change has not took effect yet or ieng6 server is currently experiencing some problems.Try again later.
Once you log into ieng6 account you should see it from the command line, and you can try some linux commands such as:
cd ~
cd
ls -a
pwd
See what happens for each command. You can also google for some other linux commands to try such as cp and cat
To log out from ieng6 server, type exit in command line.
Now create a new file called WhereAmI.java and paste the following into the file.
class WhereAmI { public static void main(String[] args) { System.out.println(System.getProperty("os.name")); System.out.println(System.getProperty("user.name")); System.out.println(System.getProperty("user.home")); System.out.println(System.getProperty("user.dir")); } }
Go to terminal in VScode again. Use cd to enter the directory where WhereAmI.java is created,(you can try to run it with javac and java) and type in the following with zz replaced with letters in your own account:
scp WhereAmI.java [email protected]:~/
Type in the password used for login and press enter, and the file copying should start.
Now login to ieng6 server again and you can see the file there. Try to run it with javac and java and see the difference.
You may noticed it takes you quite a long time to log into the server, especially when you are doing some task that require you to switch between the server and your own computer.
Here's a solution. Type in the following command in terminal:
$ ssh-keygen
Press enter and you will see questions pop up. Just press enter for all of them. In the end you will see results like this:
This means 2 key-files have been created for you in your computer in the path shown. One called id_rsa, another called id_rsa.pub.
Now use ssh to login to the server again.(In terminal, you can press up arrow on keyboard to invoke commands you used before)
Create a folder called .ssh there with mkdir command. (Search on Google!) you can use ls to make sure the folder exits. After you finish log out with exit.
Back to your computer, use scp to copy id_rsa.pub to .ssh folder in the server:
scp <path>/.ssh/id_rsa.pub [email protected]:~/.ssh/authorized_keys
with <path> and zz replaced by the path id_rsa.pub resides on your computer and the letters in your ieng6 account, respectively.
Once this is done, try to log into the server with ssh again. But this time you should not have to type in the password.
There are still other ways to simplify the operations we did above.
e.g.1 : type in local terminal (replace zz)
$ ssh [email protected] "ls"
See what happens. You can type in commands right after the ssh command with double quotation to execute it as soon as you log into the server.
e.g.2 : type in server terminal
$ ls;cp WhereAmI.java Downloads
See what happens with:
$ cd Downloads;ls
After showing the components of home directory, WhereAmI.java is copied into Downloads directory.
Now you can try to combine the previous 2 skills. Back to your local computer,type in local terminal:
$ ssh [email protected] "ls;pwd;cd Download;pwd"
