Basic file editing

‼️ To begin, make sure you have a user account at CSC that is a member of a project which has access to the Roihu service.

☝🏻 You should also have already logged in to Roihu with SSH.

In the previous tutorial we downloaded a file called my-first-file.txt, made a copy of it named YourName-first-file.txt, and now we practice how to edit it!

💬 These exercises are done with the nano editor, but you can use your favorite editor too.

💡 Here’s a nano cheat sheet.

Processing text files

Open the file with nano:

nano YourName-first-file.txt      # replace YourName

Edit the file. Type something there!
Exit nano with:
1. Ctrl+X, then
2. type Y to confirm saving, and finally
3. press Enter to accept the filename.

Check that the modifications are actually there:

less YourName-first-file.txt      # replace YourName

Exit the preview with q.

Create text files

You can also create files with nano. Try simply:
```
nano YourName-markdown-file.md
```
In the text file, write something (e.g. instructions for others how to replicate your file creation process), then save and close.
- May I interest you with the basic Markdown guide?
Use pwd and copy the path of your current working directory
Copy the text file to your personal computer for example with scp

‼️ Note: The following has to be typed in your personal computer’s terminal, not Roihu (make sure you have set up SSH keys and downloaded an SSH certificate):
```
scp cscusername@roihu.csc.fi:/path/to/your/filename.md /path/to/local/folder
```
Look for the file on your personal computer and check that the contents match.

More information

💡 You can read more about scp and moving files from Docs CSC: Copying files using scp

💬 One way to display .html files on Roihu is to go through the Allas object storage service. After configuring Allas, there’s a-commands which enable publishing files on the internet. This is instructed in the Allas tutorial.