What are the files with the ".O" extension in /etc/cups/ppd and /var/log/cups?

Solution Verified - Updated -

Issue

We want to know what the duplicate files with .O suffixed mean. For example:

$ ls /etc/cups/ppd
-rw-r--r--. 1 root lp  9912 Jan  5 12:56 prt1.ppd
-rw-r--r--. 1 root lp  9878 Jan  5 12:51 prt1.ppd.O
-rw-r--r--. 1 root lp  1311 Jan  6 15:21 prt2.ppd
-rw-r--r--. 1 root lp  1311 Jan  6 15:24 prt2.ppd.O

Environment

  • Red Hat Enterprise Linux (RHEL) 6
  • Common Unix Printing System (CUPS) 1.4.2

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