Some guy asked for duplexing a while ago. Can't remember who it was but I
just found in my CUPS docs the way to do it. I had forgotten it so I had
to dig the manual!

-----------------------------------------------------------------------------
Advanced print commands - Duplexing

    * If your printer supports its, CUPS can do duplexing from the command
line.
    * To do duplexing, the command is "lpr -o duplexingoption
filename" where duplexingoption is one of the following.
    * "sides=two-sided-short-edge" is the option suitable for landscape
pages.
    * "sides=two-sided-long-edge" is the option is suitable for portrait
pages.
    * CUPS default is to print on only one side of the paper, so while
there is an option for this ("sides=one-sided"), you don't need it.

If your printer doesn't support duplexing, but you want to fake it, CUPS
again has options to help.

    * Use the "-o page-set=set option" to select printing just the even or
just the odd pages.
    * The set value is either even, for even numbered pages, or odd, for
odd numbered pages.
    * The default is to print all pages. There is really is no option for
this.
-------------------------------------------------------------------------------

which might help.

regards,

Didier

---
PhD student

Singapore Synchrotron Light Source (SSLS)
5 Research Link,
Singapore 117603

Email: [EMAIL PROTECTED] or [EMAIL PROTECTED]
Website: http://ssls.nus.edu.sg





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