Use bash, sed, grep and tr to write a easy speardsheet language.
File New [FILENAME]: Set filename and calculate in this file until set new filename.
Size [SIZE_ROW] [SIZE_COLUMN]: Set speardsheet size.
Move Row [NUM]: Move row's register to NUM.
Move Column [NUM]: Like Move Row but target is column.
Grid Set [NUM]: Set value to (row, column).
./re_spreatsheet [SOURCE FILENAME]
example: ./re_spreatsheet test_code_1