What unix user do scripts execute as?
For individual users, both PHP and CGI scripts will run as you, not as the web server’s user id. For societies, rather than running CGI/PHP scripts as an individual, we have introduced a unix user for each society. This user cannot log in, however it is used as the user under which all society PHP/CGI scripts are run. Outgoing email generated by society CGI/PHP scripts will, by default, appear to come from [socname]-webmaster@srcf.ucam.org. See Society email addresses. Note that any CGI/PHP script which hogs the CPU for more than 2 minutes will be terminated by the system. This should not affect anything other than out-of-control scripts, as CGI/PHP scripts typically execute in a few seconds. It is a measure to prevent the server being excessively slowed down by buggy scripts which go into an infinite loop.