UNIX for Dummies Questions & Answers

dog cat mouse
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I am new to awk

awk to new am I
3 2 1
mouse cat dog

tac filename | awk 'your code goes here'

awk ' arr[NR]=$0; END{for(i=NR; i>0;i--) {print arr[i]}}' filename

awk '{for (i = 1; i <= NF; i++) a[i, NR] = $i}
END {for (j = NR; j > 0; j--){
for (i = NF; i >= 1; i--) printf("%s ", a[i, j])
printf("\n")}}' inputfile | awk '{sub(/^[ \t]+/, "")};1'
awk to new am I 
3 2 1 
mouse cat dog