##awk '{print $2}' nowcoder.txt|sort|uniq -c|sort -n|awk '{print  $1" "$2}'|awk '!/^1 /{print  $1" "$2}'
##cat nowcoder.txt|awk '{print $2}'|sort|uniq -c|grep -v '1'|sort -n
cat nowcoder.txt|awk '{print $2}'|sort|uniq -c|sort -n|awk '!/1/{print  $1" "$2}'