Question

I have two gz files. I want to compare those files without extracting. for example:

first file is number.txt.gz – inside that file:

1111,589,3698, 
2222,598,4589, 
3333,478,2695, 
4444,258,3694, 

second file – xxx.txt.gz:

1111,589,3698, 
2222,598,4589, 

I want to compare any column between those files. If column1 in first file is equal to the 1st column of second file means I want output like this:

1111,589,3698, 
2222,598,4589,

Answer 1

exact answer i want is this only

nawk -F"," 'NR==FNR {a[$1];next} ($3 in a)' <(gzcat file1.txt.gz) <(gzcat file2.txt.gz)

. instead of awk, nawk works perfectly and it’s gzip file so use gzcat