add eg cli commands in readme

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cuu 2021-08-18 22:48:43 +08:00
parent 3cc430a555
commit 1ca70d37d9

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# DevTerm Thermal printer
### Console commands example
`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`
### Eos/Pos commands example