Unix Questions and Answers – Various Operations using Awk Command – 3

This set of Tough Unix Questions and Answers focuses on “Various Operations using Awk Command – 3”.

1. ____ function breaks up a string on the basis of delimiter.
a) length
b) substr
c) system
d) split
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2. For running a UNIX command within awk, we’ve to use ____ function.
a) length
b) substr
c) system
d) split
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BEGIN 
{
      system(“date”)   // prints the system date 
}

3. sqroot(x) function returns the square root of x.
a) True
b) False
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4. Which of the following is supported by awk?
a) if
b) while
c) for
d) if, while, for
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5. print statement is necessary for printing a line.
a) True
b) False
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6. awk uses _____ dimensional arrays.
a) one
b) two
c) multi
d) three
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7. awk has some built-in functions which are used for arithmetic and string operations.
a) True
b) False
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8. Which of the following is a built-in function for awk?
a) length
b) index
c) size
d) length and index
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9. The _____ function extracts a substring from a string.
a) length
b) index
c) size
d) substr
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10. awk makes a distinction between numeric and string variables.
a) True
b) False
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