"/home/tdreader" > cat t.txt 1 2 3 4 5 6 7 8 9 12 12 32 5 66 56 343 8 875 434 0 "/home/tdreader" > cat t.txt | xargs -n 3 1 2 3 4 5 6 7 8 9 12 12 32 5 66 56 343 8 875 434 0
cat filename | tr '\n' ' ' | xargs -n 3
