Shell cyclic function array if detection file to determine the size of digits
The format of 1.while is x=1while ((x $y)); the effect of then is the same. It is recommended to use the above. Parentheses will not report errors in character calculation. When writing a program, there may be BUG echo "true" else echo "false" fi# results return true-gt is greater than the right, return true >-lt is less than the same =-le is less than or equal to the same
