bash string-operator problem

[Eliot Moss]

On 2/21/2019 3:17 PM, Lee wrote:
> On 2/21/19, john doe wrote:
>> On 2/21/2019 5:18 PM, Lee wrote:
>>> On 2/21/19, Rockefeller, Harry  wrote:
>>>> CYGWIN_NT-6.1 HARRYR-PC 3.0.0(0.336/5/3) 2019-02-16 13:21 x86_64 Cygwin

> $ cat /tmp/x
> #!/bin/bash
> A="A"
> B="A"
> if [ $A == $B ]; then
>      echo  "identical"
> fi
> if [ $A = $B ]; then
>      echo  "identical"
> fi
> 
> $ bash /tmp/x
> identical
> identical

My reading of the bash man page says that = and == in this usage
do the same thing.  However, = is Posix compliant, while (presumably)
== is not ...   Eliot Moss

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