Output directory of CUPS-PDF-Printer

The output directory of the CUPS-PDF-Printer is set in /etc/cups/cups-pdf.conf. The default directory is /var/spool/cups-pdf/${USER}. Set it like Out ${HOME}.

Reference

1. http://linux-wiki.cn/wiki/zh-hans/PDF%E6%89%93%E5%8D%B0%E6%9C%BA