$[/tmp] > more test.txt
AA ZZ 12 34
BB YY 56 78
CC XX 91 23
DD VV 45 67

$[/tmp] > echo "" > test1.txt
$[/tmp] > more test1.txt

$[/tmp] > cat test1.txt test.txt > test2.txt
$[/tmp] > more test2.txt

AA ZZ 12 34
BB YY 56 78
CC XX 91 23
DD VV 45 67

$[/tmp] > cat test.txt | awk '{print $2 " " $3 " " $4}' > test3.txt
$[/tmp] > more test3.txt
ZZ 12 34
YY 56 78
XX 91 23
VV 45 67

$[/tmp] > paste test2.txt test3.txt > test4.txt
$[/tmp] > more test4.txt
ZZ 12 34
AA ZZ 12 34 YY 56 78
BB YY 56 78 XX 91 23
CC XX 91 23 VV 45 67
DD VV 45 67