74 lines
4.5 KiB
Markdown
74 lines
4.5 KiB
Markdown
# Weetile's RHUL resources
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If you learnt something new, please consider tipping at my Ko-fi!
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[](https://ko-fi.com/weetile)
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## Linux CIM
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### SSH Alias
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You can easily create an SSH alias to make it **easier** and **more convenient** to connect to the Linux servers.
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👎 Normally, you'd authenticate to the Linux servers as such:
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ssh USERNAME@linux.cim.rhul.ac.uk
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👍🌟 By creating an SSH alias, all you have to type in is this:
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ssh rhul
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To do this, you'll need to modify your ssh config. (`~/./ssh/config`) Make sure to create it doesn't exist, then append the following to the file, replacing USERNAME with your RHUL username (e.g: ZLAT262 or similar)
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```
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Host rhul
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User zlac218
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HostName linux.cim.rhul.ac.uk
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```
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That's it! You can now access the Linux server by just typing in `ssh rhul` ✨
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Want to be able to login without typing in your password everytime? See the next section 😜
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### SSH Authentication
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Using SSH public key authentication is more secure and more importantly -- means you don't have to type in your password everytime you authenticate to the CIM servers!
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To generate a new SSH keypair, you can run the following command on Linux:
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`
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ssh-keygen
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`
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Once you have your keypair saved, you can upload it to the Linux servers using the following command, replacing `USERNAME` with your username:
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ssh-copy-id USERNAME@linux.cim.rhul.ac.uk
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You can confirm the SSH key has been added by authenticating to the server. If it doesn't ask you for your password, it's all set!
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### Accessing Linux server off-campus in the evening
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The RHUL Linux machines **aren't able to be accessed off-campus in the evening** due to security reasons. To circumvent this, you can **connect to the RHUL VPN** by following [this guide](https://intranet.royalholloway.ac.uk/students/help-support/it-services/access-off-campus/vpn/vpn.aspx). The following information in this section is copied verbatim from that guide.
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On **Linux**, download and install [this file](http://intranet.royalholloway.ac.uk/it/programs/pangplinux-5.2.4-c14.tgz) to connect to the VPN.
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On **Windows**, follow these instructions to download and install the VPN:
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1. Open your web browser and visit [https://student-vpn.royalholloway.ac.uk](https://student-vpn.royalholloway.ac.uk/). Please note that you must use 'royalholloway' and not 'rhul'
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2. Log in using your university username and password
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3. Download and open the installer for your operating system
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4. You will be guided through the process to install GlobalProtect. Leave all of the options as the default and complete the process with the installer wizard
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5. Once GlobalProtect has been installed open the app
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6. The app will ask you for a _Portal address._ Enter _student-vpn.royalholloway.ac.uk_ in the box and press _Connect_
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7. You will be prompted to log in. You will need to use your university email address (username@live.rhul.ac.uk format, e.g. abcd123@live.rhul.ac.uk) to access the university’s virtual private network (VPN). Enter these details, and press _Sign In_
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8. [Follow the instructions here to sign in with MFA.](https://intranet.royalholloway.ac.uk/students/help-support/it-services/multi-factor-authentication.aspx)
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### Change resolution and display settings on NoMachine
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xfce4-display-settings
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### Change default shell on the terminal
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On most Linux systems including the CIM servers, `bash` is used as the default shell. Normally you'd use the `chsh` command to do this, however this is locked down by CIM for security reasons.
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You can bypass this by modifying your `~/.profile` then relogging in. For example to change the default shell to `zsh`:
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```
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export SHELL=/bin/zsh
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exec /bin/zsh -l
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```
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### Adding new fonts on NoMachine
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To add new fonts, for example for use on Visual Studio Code or Eclipse, you'll need to add the font (.ttf or .otf) to your `~/.local/share/fonts` directory. Then, run this command to refresh your font cache:
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```
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fc-cache -f -v
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```
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Restart the application and you should be good to go!
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### Accessing the filesystem through Dolphin
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You can access the Linux CIM server in Dolphin by using the `fish` server. To test this, access this protocol in Dolphin, replacing USERNAME with your username (e.g: ZLAT262):
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```
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fish://USERNAME@linux.cim.rhul.ac.uk:22
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```
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You can add this as a remote directory in your Dolphin places panel by right clicking on Remote, pressing Add Entry and adding as such:
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