On Fri, Sep 18, 2026, 1:50 AM me via 9fans <[email protected]> wrote:
> I want to clarify that I meant `lp -i duplex /sys/doc/lp.ps`. I ran the > command and I got "illegal option '-i duplex' ignored". I have read the > manual and it says that `lp` accepts the `duplex` option. I don't > understand what is going on. > *9fans <https://9fans.topicbox.com/latest>* / 9fans / see discussions > <https://9fans.topicbox.com/groups/9fans> + participants > <https://9fans.topicbox.com/groups/9fans/members> + delivery options > <https://9fans.topicbox.com/groups/9fans/subscription> Permalink > <https://9fans.topicbox.com/groups/9fans/T018e03ecbf2b5fbb-M2fa8540a5f88e2acf14966b1> > Carefully read that 'i' option section again. You'll see that it says to give a paper tray number *and/or* simplex / duplex option. Options are separated by comma. Maybe '-i 1, duplex' is what you need. And make sure you have your printer config string setup with duplex. I don't have duplex printing available so I'm unfortunately unable to test. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T018e03ecbf2b5fbb-M79d4f0d8d0b05b76574df6af Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
