# Help!

# How do I ask for help?

Before asking for help please take the time to check that your question hasn't already been answered in our [FAQ](https://wiki.unil.ch/ci/books/service-de-calcul-haute-performance-%28hpc%29/chapter/faq "FAQ").

To contact us please send an e-mail to the UNIL Helpdesk at <a>helpdesk@unil.ch </a>starting the subject with DCSR

```
From:    user.lambda@unil.ch

To:      helpdesk@unil.ch

Subject: DCSR Cannot run CowMod on Curnagl

Dear DCSR,
I am unable to run the CowMod code on Curnagl - please see job number 1234567 for example.

The error message is "No grass left in field - please move to alpage"

You can find my input in /users/ulambda/CowMod/tests/hay/

To reproduce the issue on the command line the following recipe works (or rather doesn't work)

module load CowMod
cd /users/ulambda/CowMod/tests/hay/
CowMod --input=Feedtest 

Thanks

Dr Lambda
```

It helps us if you can provide all relevant information including how we can reproduce the problem and a Job ID if you submitted your task via the batch system.

Once we have analysed your problem we will get in touch with you.

# Recovering deleted files?

This depends on where the file was and when it was created and deleted.

##### /scratch

There is no backup and no snapshots so the file is gone forever.

##### /users

If it was in your home directory `/users/<username>` then you can recover files from up to 7 days ago using the built-in snapshots by navigating to the snapshot directory as follows:

```
[ulambda@login ~]$ pwd
/users/ulambda

[ulambda@login ~]$ date
Tue Jun  1 13:59:28 CEST 2021

[ulambda@login ~]$ $ cd /users/.snapshots/

[ulambda@login .snapshots]$ ls
2021-05-26  2021-05-27  2021-05-28  2021-05-29  2021-05-30  2021-05-31  2021-06-01

[ulambda@login .snapshots]$ cd 2021-05-31/ulambda

[ulambda@login ]$ pwd
/users/.snapshots/2021-05-31/ulambda

[ulambda@login ]$ ls
..
my_deleted_file_from_yesterday
..
..



```

The snapshots are taken at around 3am in the morning so if you created a file in the morning and deleted it the same afternoon then we can't help.

Beyond 7 days the file is lost forever.