echo “Hello DevTerm” > /tmp/DEVTERM_PRINTER_IN
echo -e “Hello DevTerm\n\n\n\n\n\n” > /tmp/DEVTERM_PRINTER_IN
cat file.txt > /tmp/DEVTERM_PRINTER_IN
ncal -hb | tee > /tmp/DEVTERM_PRINTER_IN
set printer font index,n:0-4
echo -en "\x1b\x0" > /tmp/DEVTERM_PRINTER_IN
n:0-F, set printer printing density
echo -en "\x12\x23\x8" > /tmp/DEVTERM_PRINTER_IN
print the test page
echo -en "\x12\x54" > /tmp/DEVTERM_PRINTER_IN