Question

To refer a field or column in the current line, ___________ symbol is used in awk command.

Answer 1

Answer:

enter column comand

Explanation:

if we want to insert a column in current column then we use insert comand and then enter

Answer 2

To refer a field or column in the current line, a $ symbol is used in awk command.

Explanation:

• When awk command is used to reading an input record, that record is to automatically separate to be parsed by an interpreter into chunks which is called fields.
• Fields are to be separated by white space and words in a line. It is used to make more convenient the record, operate the records. Fields make more powerful the program.
• Here the first field referred by $1. This refers to the second field $2. Awk updates the value of NF automatically, each time a record is read.
• No matter how many fields there are, the last field in a record can be represented by $NF.  $0 reference to the "zeroth" field. $0 is used to not interested in fields.

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