[Solved] In awk, what does the special variable NF represent? — Ans: The number of fields in the current record | Linux CLI

Linux CLI - Text Processing

In awk, what does the special variable NF represent?

AThe number of lines in the input file

BThe value of the first field

CThe number of fields in the current record

DThe total number of characters in the line

Step-by-Step Solution

Solution:

Step 1: Understand NF in awk
NF is a built-in variable that holds the number of fields in the current input line.
Step 2: Compare options with definition
Only The number of fields in the current record correctly describes NF as the number of fields in the current record.
Final Answer:
The number of fields in the current record -> Option C
Quick Check:
NF = number of fields [OK]

Quick Trick: Remember NF counts fields per line, not lines or characters [OK]

Common Mistakes:

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In awk, what does the special variable NF represent?