Dear galaxy-dev list, The documentation (https://galaxyproject.org/admin/config/performance/cluster/) mentions that sudo permissions for /usr/bin/chown are required in order to run jobs as a real user. This causes quite some headache to our system admins (understandably). I tried (unsuccessfully) to dig a bit in the sources to find the place(s) where sudo chown is called (the idea was to create a small wrapper which might get sudo permissions). But I found that there is already scripts/external_chown_script.py (which is also referred in galaxy.ini). Is it sufficient to make this script sudo callable? Or where could I invoke a wrapper for sudo chown in the galaxy code? Thanks a lot. Best regards, Matthias -- ------------------------------------------- Matthias Bernt Bioinformatics Service Molekulare Systembiologie (MOLSYB) Helmholtz-Zentrum für Umweltforschung GmbH - UFZ/ Helmholtz Centre for Environmental Research GmbH - UFZ Permoserstraße 15, 04318 Leipzig, Germany Phone +49 341 235 482296, m.bernt@ufz.de, www.ufz.de Sitz der Gesellschaft/Registered Office: Leipzig Registergericht/Registration Office: Amtsgericht Leipzig Handelsregister Nr./Trade Register Nr.: B 4703 Vorsitzender des Aufsichtsrats/Chairman of the Supervisory Board: MinDirig Wilfried Kraus Wissenschaftlicher Geschäftsführer/Scientific Managing Director: Prof. Dr. Dr. h.c. Georg Teutsch Administrative Geschäftsführerin/ Administrative Managing Director: Prof. Dr. Heike Graßmann -------------------------------------------