Hello world/Line printer
You are encouraged to solve this task according to the task description, using any language you may know.
Cause a line printer attached to the computer to print a line containing the message Hello World!
BASIC
<lang qbasic>LPRINT "Hello World!"</lang>
Batch File
<lang dos>ECHO Hello world!">PRN</lang>
Tcl
On Unix only: <lang tcl>exec lp << "Hello World!"</lang> or <lang tcl>set f [open |lp w] puts $f "Hello World!" close $f</lang> On Windows only: <lang tcl>set f [open prn w] puts $f "Hello World!" close $f</lang>
UNIX Shell
<lang bash>echo 'Hello World!'|lp</lang>