If statement with pipeline

Shell Programming and Scripting
1

Hi

Can anybody please explain me the following script in detail

Value=`echo "if ( ${FACTOR[$ROW]} >= 1 ) {1}" | bc`

What does "{1}" mean to here ?

2

It is the statement that bc evaluates if the condition is true.

In effect it uses bc to parse the condition and return 1 if true

From the bc manual section on statements:

3

I wonder if the syntax is correct. Have you run whatever contains that statement? What shell are you using?

4

It works just fine with gnu bc