I have a pdf file with confidential information on a usb flash drive. This document needs to be printed on a multi user Ubuntu system. I want to prevent other users from seeing the content of the document.
Assume the following procedure:
- The usb drive is inserted to the computer and mounted.
- The document is opened with
evinceand printed directly from the program.
- The usb drive is unmounted and removed from the computer.
Question: What do I need to do to wipe any traces / copies of the document I printed?
First idea: I guess
/tmp would be a good place to look out for - though I do not know if there will be any copies stored there or at other places. Do I have to do additional steps to remove all traces / copies?
Further information: It is a local printer. Both me and other users have root privileges.