Question

The if command looks for what exit code to consider a condition to be true?

A) 1
B) 0
C) 2
D) 255

Answer 1

The if command looks for an exit code of 0 to determine that a condition is true, which indicates successful execution of a command without errors.

Step-by-step explanation:

The if command in most programming and scripting languages, including shell scripting in Unix and Linux, looks for an exit code of 0 to consider a condition to be true. When a command runs successfully without any errors, it usually returns an exit status of 0. Conversely, a non-zero exit code typically indicates an error or false condition. While different non-zero values can provide further detail about specific error types or statuses, for the purpose of logic flow control, zero is the standard success code that the if command checks for.