The xargs, sort, and uniq commands are introduced by a question from LeetCode and used to understand;
The title is this: write a bash script to count a text file words.txt.
The content
Tag: UNIQ
Text handling CUT, SORT, UNIQ, PASTE regular expression
Text processing cut, sort, uniq, paste regular expressions 1 cut Extract text by column cut -d DELIMITER -f FILEDS .example,cut -d: -f1, use- d: Colon separator, use f1 to get the first column.