On 01/28/2014 09:41 PM, Jeremy McFarland wrote:
Hello,
I am very impressed with sage, and would love to use it on my Ubuntu server. I
attempted to install sagecell, but that was a huge mess and I gave up. I do not
want to make calls to another system outside my network, so I need sage (or
sagecell) to run locally.
I am running Ubuntu 12.04 Server with the latest version of Sage binary
installed. When I attempt to execute a sage -python call I receive the
following error in my Apache2 error.log:
Error: environment variable $HOME is not set.
Error setting environment variables by sourcing
'/usr/lib/sagemath/spkg/bin/sage-env'
Setting $HOME in the python script does not fix this. /var/www/.sage exists in
the www-data home directory of /var/www. www-data owns and has r/w on
/var/www/.sage.
Is there a fix for this? If not, is there a successful install instruction set
for installing sagecell on Ubuntu with the latest release of Sage? Any other
alternatives for execution of python code using the Sage libraries so I can
execute things in sage and return them to my PHP script being run on the
webserver?
You can try to set $HOME in SAGE_ROOT/local/bin/sage-env, like
export HOME="some directory"
This file is not a python script, but is a bash script.
The problem you are facing is that Sage expects $HOME to be defined and
the directory actually present. It uses $HOME/.sage by default where it
stores all configuration.
Thanks in advance,
-Jeremy
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