Other shells generally do not support ] and ((.)) or =. Last note: Many of the Bash specific extensions to the Test Constructs are not POSIX and therefore may fail in other shells. The -eq causes the strings to be interpreted as integers if possible including base conversion: $ ] echo $?Īnd 0 if Bash thinks it is just a string: $ ] echo $? In comments, there is a question about the technical reason why using the integer -eq on strings returns true for strings that are not the same: $ ] echo $? The correct test for 10 being arithmetically less than 2 is this: $ ] echo $? So many are bitten by this bug: $ ] echo $? 10 is lexicographically less than 2, so a string comparison returns true or 0.
While a string comparison of the same picks up the trailing space and therefore the string comparison fails: $ ] echo $?Īnd a mistaken string comparison can produce a completely wrong answer. So -eq produces the result probably expected that the integer value of 1+1 is equal to 2 even though the right-hand side is a string and has a trailing space: $ ] echo $?
While you can do ] or ] it is testing the string equality - not the arithmetic equality. Also, note the whitespace around = or =: it’s required. Keep in mind that Bar-On's theory is closer to the framework of a general personality theory and therefore may provide the better measurements (and. There are differences between the two models, meaning there is always a real chance that EQ measurements constructed in this way also differ. The = inside of single or double brackets (or the test command) is one of the string comparison operators: $ ] echo $?Īs a string operator, = is equivalent to =. An EQ test therefore is the same as a personality test. If you are using (or single brackets) or ] (or double brackets), or test you can use one of -eq, -ne, -lt, -le, -gt, or -ge as an arithmetic comparison. Using -eq inside of double parentheses is a syntax error.
(Note: 0 means true in the Unix sense and a failed test results in a non-zero number.) The article shows how the notion of emotional intelligence and EQ development have recently become widely accepted. If you use ((… )), you are testing arithmetic equality with = as in C: $ (( 1=1 )) echo $? The article shows that IQ does not equal success but that emotional components that are not captured by the traditional IQ are very important for success. Empathy Quotient (EQ-40) - online (recommended) version. Journal of Autism and Developmental Disorders 34:163-175. quizzes for assessment of intelligence from different points of view. An investigation of adults with Asperger Syndrome or High Functioning Autism, and normal sex differences. Your options are double parentheses, double brackets, single brackets, or test. IQ, EQ (EIQ), logic IQ, analytical reasoning, spatial IQ, Gardners multiple intelligences, verbal intelligence, mind games - PsychTests has intelligence tests (Mensa style) and I.Q. It depends on the Test Construct around the operator.
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