Write a bash script to calculate the frequency of each word in a text file words.txt.
For simplicity sake, you may assume:
words.txtcontains only lowercase characters and space' 'characters.
<li>Each word must consist of lowercase characters only.</li>
<li>Words are separated by one or more whitespace characters.</li>
Example:
Assume that words.txt has the following content:
the day is sunny the the the sunny is is
Your script should output the following, sorted by descending frequency:
the 4 is 3 sunny 2 day 1
Note:
- Don't worry about handling ties, it is guaranteed that each word's frequency count is unique.
<li>Could you write it in one-line using <a href="http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-4.html">Unix pipes</a>?</li>