This survey is a part of the community effort to capture the most relevant skills for an HPC practitioner. The HPC skill domains have been split into 6 different areas, and each sub-domain contains a set of skills. The purpose of this survey is to rank the importance of the skills categorised within the HPC environment domain, focusing on smooth and efficient use of supercomputers. To ensure the coverage of all relevant technical areas and identify any potential gaps a several of open questions have been included.