Hi Yvan, In order to install the latest Qserv development version on the cluster, each developer need to be able to run next command on each node: ./echo '$PASS' | /bin/sudo -S su qserv -c "/bin/bash /path/to/install/script/install-node.sh" This method is very insecure as the password can be easilly retrieved by a third-party. Would it be possible to disable use of a password when running: sudo su qserv -c "blahblahblah" for each Qserv developer? Is it your job or my job to do it? Thanks, Fabrice ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1