Windows – stable file copy utility built into windows 7

In a batch file, you can connect to the share with the user option:

net use x: \\share\some /user:username password

then do the copy command as you normally would (either using the drive letter, or using the UNC as in the question), then disconnect from the share with

net use x: /d

(You can put * in place of the password to be prompted for it.)

Disclaimer: I'm not sure if this works in a domain.

Use Microsoft's lpr client

C:\>lpr /?

Sends a print job to a network printer

Usage: lpr -S server -P printer [-C class] [-J job] [-o option] [-x] [-d] filename

Options:
     -S server    Name or ipaddress of the host providing lpd service
     -P printer   Name of the print queue
     -C class     Job classification for use on the burst page
     -J job       Job name to print on the burst page
     -o option    Indicates type of the file (by default assumes a text file)
                  Use "-o l" for binary (e.g. postscript) files
     -x           Compatibility with SunOS 4.1.x and prior
     -d           Send data file first

This works with JetDirect and similar boxes/adapters as well as Unix/Linux and Windows servers that have the LPD service enabled.