##leetcode 192 ```bash cat words.txt | tr -cs ‘[a-zA-Z]’ ‘\n’ | sort |uniq -c | sort -r | awk ‘{print $2,$1}’
Word Frequency
Jun 5, 2016
Jun 5, 2016
##leetcode 192 ```bash cat words.txt | tr -cs ‘[a-zA-Z]’ ‘\n’ | sort |uniq -c | sort -r | awk ‘{print $2,$1}’