TOYOSHIKI Tiny BASIC for Unix-like operating systems.

RIPPING OFF MICRO$OFT SINCE 1976!

The code is tested on Raspberry Pi Raspbian Stretch, Trisquel GNU/Linux Flidas (8.0) and NetBSD/i386 9.0
Use UART terminal (if you want to?).

Operation example

> list
10 FOR I=2 TO -2 STEP -1; GOSUB 100; NEXT I
20 STOP
100 REM Subroutine
110 PRINT ABS(I); RETURN

OK
>run
2
1
0
1
2

OK
>

The grammar is the same as
PALO ALTO TinyBASIC by Li-Chen Wang
Except 4 point to show below.

1. The contracted form of the description is invalid.
2. Force abort key
   PALO ALTO TinyBASIC -> [Ctrl]+[C]
   TOYOSHIKI TinyBASIC -> [ESC]
3. SYSTEM command
   SYSTEM QUIT return to Linux.
4. Other some beyond my expectations.

(C)2020 Gapstare
(C)2015 Tetsuya Suzuki
GNU General Public License