School of Computing
College of Engineering
University of Nebraska-Lincoln
This repository serves as a reference for helping students enrolled in CSCE 155A set up a local development environment and access files stored remotely on the CSE server.
The first thing you should do as a new student in the School of Computing is claim your CSE account. You can do so by clicking this link.
If you run into trouble claiming your CSE account, first read the School of Computing Resources section of the page
linked here.
If you are still having issues, let your TA know and they will either help you
out or point you to sysadmin if it's a trickier problem.
RTM. Just kidding, for now use the commands given in the lab 01 quiz. We will flesh this section out at new commands are introduced. (But also do RTM).
Now that you have an account on the CSE server, you have some space set aside for your very own files and directories. But you probably need some way to access it. This can be done through a tool like Secure Shell (SSH).
If your device is running an up-to-date version of Windows or macOS, you should already be able to use SSH in your terminal. A guide for logging in can be found below.
Click here for a guide on using SSH in Windows and macOS
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While focused in your terminal app, you should see a prompt with a blinking cursor. This is where you can enter commands and use tools like SSH.
Last login: Tue Jul 3 20:59:45 on ttys000 local-prompt> -
To log in to the CSE server, type
ssh [login ID]@cse.unl.eduwhere[login ID]is replaced with the login ID of your CSE account. In this example, my login ID is 'jsmith'. Enter this command and you should see a prompt for your password.NOTE: You will likely receive a prompt saying that the authenticity of host 'cse.unl.edu' can't be established if this is your first time connecting to the CSE server through SSH. Enter
yesto reach the password prompt as shown below.local-prompt> ssh [email protected] The authenticity of host 'cse.unl.edu (10.211.11.120)' can't be established. RSA key fingerprint is 3f:1b:f4:bd:c5:aa:c1:1f:bf:4e:2e:cf:53:fa:d8:59. Are you sure you want to continue connecting (yes/no)? yes ([email protected]) Password: -
Type the password for your CSE account into the prompt. You will not see anything actually being typed as you do this, this is a security measure just like the dots that pop up when you log in to a website.
If you entered the correct password, you should see a lovely header welcoming you to the CSE server!
NOTE: If you see a prompt for a verification code, you did not use the correct login ID. Visit the CSE Account Information Portal linked here to check your login ID.
Last login: Tue Jul 3 11:05:12 2019 from 101.231.303.416 ****************************************************************************** Welcome to CSE ****************************************************************************** The operating system on this computer was upgraded on March 18, 2018. Please contact "[email protected]" to report problems, request software or ask questions about this system. ****************************************************************************** cse.unl.edu-prompt> -
At this point, you have successfully used SSH to log into the CSE server and can view the files and directories you have stored there. Keep in mind, you will time out of the server if you are idle for too long. If this happens, just login with SSH again (Starting at step 2 of this section).
Using SSH, you can view and even edit files that are stored on the CSCE server. Without the help of another tool, though, you can't move your files between the server (remote) and your own machine (local). Luckily, we aren't the first computer scientists to run into this problem and it's already been solved for us. This tool is called Secure Copy (SCP).
With SCP, there are two directions we should be concerned with at this point. Remote to local would copy from the server to your machine. Local to remote would copy from your machine to the server.
Both scenarios involve arguments for SCP that look very similar, so be wary. The
simplest way to remember the command is as
scp [source] [target].
Guides for either case can be found below.
Click here for a guide on remote to local SCP in Windows and macOS
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While focused in your terminal app, you should see a prompt with a blinking cursor. This is where you can enter commands and use tools like SCP.
NOTE: Notice the prompt below is
local-prompt, meaning that we are not currently logged in to the CSE server via Secure Shell (SSH). Make sure you are logged out of the server at this point.Last login: Tue Jul 3 20:59:45 on ttys000 local-prompt> -
To copy a file stored on the CSE server to your own machine, type
scp [login ID]@cse.unl.edu:[remote filepath] [local filepath], where[login ID]is replaced with the login ID of your CSE account. In this example, my login ID is 'jsmith'.[remote filepath]is the location on the server of the file you'd like to copy. A Unix shortcut for home directory is~. In this example, I am copying a text file called 'my_file.txt' which is stored in a folder on my server account called 'my_directory'.[local filepath]is the location on your machine you'd like to copy to. In this example, I am copying that text file to a folder in my home directory called 'Desktop'.If filepaths and command arguments are confusing, please review the
Unix Basicssection of this page or reach out to a TA. Enter this command and you should see a prompt for your password.NOTE: SCP will mercilessly overwrite any file stored at your target that has the exact same filename as your source. Unix is powerful but make sure you know what will happen before executing a command.
local-prompt> scp [email protected]:~/my_directory/my_file.txt ~/Desktop/ ([email protected]) Password: -
Type the password for your CSE account into the prompt. You will not see anything actually being typed as you do this, this is a security measure just like the dots that pop up when you log in to a website.
If you entered the correct password and filepaths, you should see a new line in your terminal indicating the status of your desired file.
my_file.txt 100% 0 0.0KB/s 00:00 local-prompt> -
Once the percentage reaches 100%, you have successfully copied a file from the CSE server to your own machine! You can find this copy in the location you specified as
[local filepath]when first running SCP.
Click here for a guide on local to remote SCP in Windows and macOS
-
While focused in your terminal app, you should see a prompt with a blinking cursor. This is where you can enter commands and use tools like SCP.
NOTE: Notice the prompt below is
local-prompt, meaning that we are not currently logged in to the CSE server via Secure Shell (SSH). Make sure you are logged out of the server at this point.Last login: Tue Jul 3 20:59:45 on ttys000 local-prompt> -
To copy a file stored on your own machine to the CSE server, type
scp [local filepath] [login ID]@cse.unl.edu:[remote filepath], where[login ID]is replaced with the login ID of your CSE account. In this example, my login ID is 'jsmith'.[local filepath]is the location on your machine of the file you'd like to copy. A Unix shortcut for home directory is~. In this example, I am copying a text file called 'my_file.txt' which is stored in a folder in my home directory called 'Desktop'.[remote filepath]is the location on the server you'd like to copy to. In this example, I am copying that text file to a folder on my server account called 'my_directory'.If filepaths and command arguments are confusing, please review the
Unix Basicssection of this page or reach out to a TA. Enter this command and you should see a prompt for your password.NOTE: SCP will mercilessly overwrite any file stored at your target that has the exact same filename as your source. Unix is powerful but make sure you know what will happen before executing a command.
local-prompt> scp ~/Desktop/my_file.txt [email protected]:~/my_directory/ ([email protected]) Password: -
Type the password for your CSE account into the prompt. You will not see anything actually being typed as you do this, this is a security measure just like the dots that pop up when you log in to a website.
If you entered the correct password and filepaths, you should see a new line in your terminal indicating the status of your desired file.
my_file.txt 100% 0 0.0KB/s 00:00 local-prompt> -
Once the percentage reaches 100%, you have successfully copied a file from your own machine to the CSE server! You can find this copy in the location you specified as
[remote filepath]when first running SCP. You will need to log in via SSH to do this.
Q: Feel free to ask as many questions as you want during labs! If any are
common enough, we will either update a page section or will address it here.
A:
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent