# cat temp.txt
abc www 3201 3/13/11 30138
def gro 3033 2/32/13 02901
xyz dai 3010 8/81/11 10391
opq lio 8901 7/18/38 31899
awk '{print $0}' temp.txt
abc www 3201 3/13/11 30138
def gro 3033 2/32/13 02901
xyz dai 3010 8/81/11 10391
opq lio 8901 7/18/38 31899
# awk '{ buf[NR % 2] = $0; } END { for (i=1; i<3; i++) {print buf[i%2] }}' temp.txt
xyz dai 3010 8/81/11 10391
opq lio 8901 7/18/38 31899
awk '{print NR, $0}' temp.txt
1 abc www 3201 3/13/11 30138
2 def gro 3033 2/32/13 02901
3 xyz dai 3010 8/81/11 10391
4 opq lio 8901 7/18/38 31899
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