Question

Consider the following code: for index in one two three four ; do echo "CST" done

What is this code's output?
a)CST
CST
CST
CST
b)nothing
c)one
two
three
four
d)index
index
index
index

Answer 1

With an assumed typo corrected, the code would output 'CST' four times, each on a new line, corresponding to each item in the loop.

Step-by-step explanation:

The given code is a shell script running a loop that will echo "CST" for each word in the list. However, the code seems to have a missing semi-colon ';' before the "done" statement, which is required in order to terminate the echo command and continue with the loop. Assuming the missing semi-colon is a typo, the correct output should be "CST" echoed four times, one for each word in the for loop. However, if the semi-colon is indeed missing the script will throw an error.

If the syntax was correct, with a semi-colon added after the echo "CST" command, the output will be:

CST
CST
CST
CST

Each occurrence of "CST" would be on a new line because the echo command inherently includes a newline at the end of its output.