5

I have a file File1 with data as

aaa
bbb

And another file File2 with data as:

2,aaa,234
w,bbb,589
4,ccc,675

I need to compare the File1 data with column2 data of File2 and print the matching into a one file and the non-matching into another.

  • 1
    Do you need just the data from File1, or also the extra columns that are only in File2? Is the order of lines important? – Gilles 'SO- stop being evil' Mar 10 '16 at 22:19
  • What would the correct output be for this example? – Alexander Mar 12 '16 at 8:14
3
awk -F '
  !b{a[$0]; next}
  $2 in a {print > "matching.txt"; next}
  {print > "non-matching.txt"}' file1 b=1 file2

Or with two passes and assuming the files are sorted on the join key:

join -t , -2 2 -o 2.1,2.2,2.3 file1 file2 > matching.txt
join -t , -2 2 -v 2 -o 2.1,2.2,2.3 file1 file2 > non_matching.txt
1

This one-liner uses cut to pick out the right field and grep to find matches. Matches and non-matches are appended to the files named Matching and NonMatching, respectively.

for x in $(cut -d, -f2 File2); do grep -q "$x" File1 && echo "$x" >> Matching || echo "$x" >> NonMatching; done

0

Here is the command for matching records -

awk -F, 'FNR==NR{f1[$1]=$0;next}$2  in f1{print $0}' OFS="," file1 file2 > matchedRecords.txt

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