在Linux终端中比较两个文件 [英] Comparing two files in linux terminal

问题描述

有两个名为"a.txt" 和"b.txt" 的文件都有单词列表.现在，我要检查"a.txt" 中哪些单词是多余的，而"b.txt" 中哪些单词不是多余的.

There are two files called "a.txt" and "b.txt" both have a list of words. Now I want to check which words are extra in "a.txt" and are not in "b.txt".

我需要一种高效的算法，因为我需要比较两个字典.

I need a efficient algorithm as I need to compare two dictionaries.

推荐答案

这是我的解决方案:

mkdir temp
mkdir results
cp /usr/share/dict/american-english ~/temp/american-english-dictionary
cp /usr/share/dict/british-english ~/temp/british-english-dictionary
cat ~/temp/american-english-dictionary | wc -l > ~/results/count-american-english-dictionary
cat ~/temp/british-english-dictionary | wc -l > ~/results/count-british-english-dictionary
grep -Fxf ~/temp/american-english-dictionary ~/temp/british-english-dictionary > ~/results/common-english
grep -Fxvf ~/results/common-english ~/temp/american-english-dictionary > ~/results/unique-american-english
grep -Fxvf ~/results/common-english ~/temp/british-english-dictionary > ~/results/unique-british-english

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