Shell comparison of floating-point numbers and integers

Today, a friend suddenly asked me in the shell, how to compare floating point and integer, but I asked a Leng, in the work did not encounter this scene. We also know that the calculation of numbers in the shell is usually converted to integers, such as 1.1 and 1, which are considered to be the same. In this way, we can not directly through the GT or LT and other ways to compare. Although not met, but we also know that this comparison is certainly not difficult. Simply record it for backup.

Here is an example of a general notation:

if 1.1 1 ];  Then   echo"OK"fi

The following exception is thrown directly:

3 1.1: integer expression expected

The correct wording is as follows:

if ['echo'1.1 > 1"1 ];  then    Echo " OK " fi

Shell comparison of floating-point numbers and integers