CODEWITHSUNDEEP
linux
user2835124
user2835124

Reputation: 9

Linux utility for changing text in file

I'm on linux Fedora having a.dat text file, which is a table of numbers. I have at columns 1 and 2 very big numbers, greater than 2000000, all the other numbers are smaller than 1000. I want to use linux utility which can open a file, search it for containing large numbers (condition is >2000000) and substitute each found number by the value of a counter which is incremented each time the number is substituted.

Is it possible todo in a terminal using maybe grep and how it can be done?

Upvotes: 0

Views: 64

Answers (1)

Ivaylo Strandjev
Ivaylo Strandjev

Reputation: 70999

You can do what you want using awk. Typically you can replace in a file using sed, but only replacing values bigger than 2000000 using sed will be tricky.

If I were you I would write a simple ruby or python script. In general it will take you less time and will be easier to maintain and read.

Upvotes: 1

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