//Desktop is not desktop
//default printer is black/white printer, which is old now. it's a two sides printer.and U hv to put the red button.it means U can print now.
[email protected]:~$ cd Desktop
[email protected]:~/Desktop$ lpr 00946629.pdf
2. color .pdf file.
//a little bit difficult.
// my machine in the lab is 64bits' under debian OS.
//So, the first step is to exchange the envirnment from 64bits' to 32bits'.
[email protected]:~/Desktop$ dchroot -d
//now, hv change from 64bits' to 32bits'
//then, start the acroread &
I: [i386 chroot] Running shell: '/bin/bash'
i386:[email protected]:~/Desktop$ acroread &
//I can use the acroread to print the color .pdf
// after do it .exchange my pc from 32bits' to 64 bits'
i386:[email protected]:~/Desktop$ exit
sammry, the command lines are :