Update HPC0

[agdturner]

Update HPC0

[jhodrien]

Yes, yes, yes. Perhaps think about what order to put them in - sed likely last, perhaps grep before for loops? Need to plan for not finishing all the material.

All the team info is pulled in from the variable file, so it is at least a single place for all training courses.

[agdturner]

I think it would be good to consider the following changes too, but I'm not sure if these should be done on this branch:

1. fork the shell-training repository and use the fork
2. add an example solution to a filtering exercise that uses grep to introduce that command
3. add an example search and replace using sed to introduce that command more fully
4. link to the team page on the website or pull in information from there rather than having to update team information in many places

[agdturner]

The repository is already forked and available here: https://github.com/ARCTraining/shell-training

[jhodrien]

Yes, I think I was half way through unpicking things.