disk space gone?

I have an RSE account with OLM and I typcially have about 2 - 2.5 gig free of disk space on my server.

Last week my free disk space was 0, and I found that I have about 2 gig of files in my /tmp dir.

These are pretty big files (one was 400 meg) and they all end in .wrk

What are these files?

Can I delete them?

 

 

 

 

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