99乘法表(bash)

awk方式：

# awk 'BEGIN{for(i=1;i<=9;i++){for(j=1;j<=i;j++){printf j"x"i"="i*j "\t"} print ""}}'

for循环方式：

#!/bin/bash
for i in `seq `
do
    for j in `seq `
    do
         [ $j -le $i ]  && echo -ne "$j*$i=$((i*j))\t"
    done
    echo -e "  "
done