awk - how to merge 2 files in linux -

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• how can merge 2 files? 4 answers

i have file 1:

line1 line2 line3 .... 

file 2:

date1 date2 date3 ... 

and result should be:

line1, date1 line2, date2 line3, date3 ... 

is there way on linux awk (i think) job on command line? lot

you can use awk

awk 'fnr==nr {a[nr]=$0;next} {print a[fnr]", "$0}' file1 file2 line1, date1 line2, date2 line3, date3 ...., ... 

fnr==nr {a[nr]=$0;next} when reading first file fil1, store in array a {print a[fnr]", "$0} print out array a using line number index , data file2