How to read file line by line using AWK?

How to read file line by line using AWK?

I want to read this file line by line using awk as while loop takes much time to process

How to loop a list through AWK-Unix Stack Exchange?

I have two files: data.csv and list.txt. Here’s an example of what they look like where the command runs for each line of list.txt, replacing **LIST ITEM**. How can this be accomplished? I’m running this though Terminal on MacOSX 10.5.7. And instead, run it in one command, somehow looping through all the lines of list.txt.

How to loop through a file to get every line?

So it would be very strange to have a loop like for (i = 1; i<= NR; i++) in an awk script: when awk goes through the first line this executes the loop body for i=1, then awk goes through the second line and the loop body is executed for i=1 and i=2, then awk goes through the second line and the loop body is executed for i=1 and i=2 and i=3, etc.

What can AWK be used for in text processing?

awk is pattern scanning and text processing language. It is useful for manipulation of data files, text retrieval and processing, and for prototyping and experimenting with algorithms.

How to use AWK to print columns in a loop?

It is also possible to invoke the command2 within awk. it depends on the requirement. if you don’t want to catch output of cmd2, you could do: But again, this is depended on your logic/requirement.

How to pass shell variable to AWK in command2?

You are getting confused between $i the shell variable and $i the i th field in awk. You need to pass in the value of shell variable to awk in using -v: This will let command2 process each column from the output of command1 separately.

What to do with a stack overflow file?

If you have anything else you want to do with the contents of that file, please do let us know (by updating your question with expected output and an explanation) so we can help you. Thanks for contributing an answer to Stack Overflow!