I have two separate lines being consolidated onto one line. The issue is that at the current moment, it is being separated by a space. I would like to know how I can separate the two lines into one line with a Tab spacing instead.

Here is the code I currently have:

awk '/^loginName:/{x=NR+1}(NR<=x){print}'\t FinalResults.txt| sed "N;s/\n/ /g"

I see the tab command is %\t, but where exactly would this go? Also, can you break down the current coding and explain in detail what everything does and what is the purpose as I am trying to learn how bash works.

Additional information: The question is related to this answer: https://unix.stackexchange.com/a/502156/330217. The input file FinalResults.txt is the same as shown inthe other question.

  • Is this related to unix.stackexchange.com/q/502115/330217 ? Please show your input file FinalResults.txt and expected and actual output in the question. – Bodo Feb 22 at 15:20
  • It is, I gave you the best answer to that one. But this one was a shorter script so I was wondering how it worked and just focusing on the Tab command for this. I tried adding the %\t everywhere and no luck. I want it to show Name Tab Memory then next line. – Ibrahim A Feb 22 at 15:29

The awk script prints all lines starting with loginName: and the next line immediately following it regardless of its contents.

/^loginName:/{x=NR+1} # for matching lines store the record (line) number +1 into x
(NR<=x){print} # The condition will be true for the line matching the pattern above and the following line.

Read the documentation of sed and awk. See https://stackoverflow.com/q/6255796/10622916 for sed's N command.

Replace the sed command with

 sed "N;s/\n/\t/g"

to separate the lines with Tab instead of space.

Or change the awk script

awk '/^loginName:/{x=NR+1;l=$0}NR==x{print l "\t" $0}' FinalResults.txt

and omit the sed command.
If you want it even shorter

awk 'l{print l"\t"$0;l=0}/^loginName:/{l=$0}' FinalResults.txt

but a shorter script may be more difficult to understand.
(Here the condition for printing is the value of l being non-empty and not 0, and l stores the loginName: line.)

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