The default location of print spool files is
/var/spool/cups in Ubuntu 14.04. I tried to edit the
cups-files.conf file which is located in
/etc/cups/ directory, but I'm unable to change the directory for the spool files. I want to know how I can change the location for spool files.
The documentation suggests you change the RequestRoot option in the config file. Did you try that?
Specifies the directory that contains print jobs and other HTTP request data. The default is "/var/spool/cups".