CODEWITHSUNDEEP
stringbashawk
Michael Gruenstaeudl
Michael Gruenstaeudl

Reputation: 1783

Add consecutive number within each line

Assume a text file file that contains multiple lines of text strings.

> cat file
foo bar baz
bar quux foo
foo baz quux

I would like to add a consecutive number (with leading digits, followed by an underscore) to each third-column word.

> cat file | sought_command
foo bar 001_baz
bar quux 002_foo
foo baz 003_quux

I believe that this can be achieved simply via awk (awk '{printf("%03d ...), but can't come up with the proper code.

Upvotes: 2

Views: 82

Answers (1)

123
123

Reputation: 11216

You can use sprintf and assign it to $3, using the line number as the digit.

awk '$3=sprintf("%03d_%s",NR,$3)' file

foo bar 001_baz
bar baz 002_qux
foo baz 003_quux

Upvotes: 3

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