connect parallel port in pc
 

i have connect parallel port connector in pc but yhey r not dected in linux command line.

Read the "Question Guidelines" link in my posting signature. You have provided absolutely no useful details...we can't guess as to what you want, what you've done/tried, version/distro of Linux, hardware, etc. Also, please avoid text-speak...it's "are", not "r".

What linux distribution/version are you running?

I assume you connected a printer to the parallel port. What is the make and model?

Parallel port devices are not automatically detected like USB devices. Depending on the distribution you can use the printer wizard or cups web interface to add the printer.