题解 | #打印每一行出现的数字个数#
打印每一行出现的数字个数
https://www.nowcoder.com/practice/2d2a124f98054292aef71b453e705ca9
#!/bin/bash total=0 line_number=1 while read -r line; do count=$(echo "$line" | grep -o '[1-5]' | grep -c .) echo "line$line_number number: $count" total=$((total + count)) ((line_number++)) done < nowcoder.txt echo "sum is $total"