Hello world/Line printer: Difference between revisions
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removed quotation mark from batch; various other minor clean-up
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{{works with|QBasic}}
{{works with|ZX Spectrum Basic}}
<lang qbasic>LPRINT "Hello World!"</lang>
=={{header|Batch File}}==
<lang dos>ECHO Hello world!
=={{header|J}}==
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=={{header|Tcl}}==
===[[Unix]]===
<lang tcl>exec lp << "Hello World!"</lang>
<lang tcl>set f [open |lp w]
puts $f "Hello World!"
close $f</lang>
===[[Windows]]===
<lang tcl>set f [open prn w]
puts $f "Hello World!"
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{{works with|POSIX}}
Alternately, there are the character devices <tt>/dev/lp0</tt>, <tt>/dev/lp1</tt>, <tt>/dev/lpN</tt> and so on which correspond to line printers (if there are any attached to the system). Data written to these devices is sent to attached printers.
<lang bash>echo 'Hello World' > /dev/lp0</lang>
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