从另一个文件中查找行 [英] find lines from one file in another

问题描述

因此，我有一个带有名称列表的file1.txt，另一个带有另一个名称列表的file2.txt，我需要一个包含两个文件名称的列表。

我试过 grep -f file1.txt file2.txt> newlist.txt 但由于某些原因，它不起作用，newlist.txt的名称不在file1中。

有没有人知道为什么会发生这种情况，我能做些什么才能得到两个名单上的名字？

谢谢。

解决方案

如果file1.txt和file2.txt已排序，那么可以使用'comm'

  comm -12 file1.txt file2.txt> newlist.txt 
  

So I have a file1.txt with a list of names, and a file2.txt with another list of names and I need a list with the names that are in both files.

I tried grep-f file1.txt file2.txt > newlist.txt but for some reason it isn't working, and the newlist.txt has names that are not in file1.

Does anyone know why this is happening and what i could do to get only the names that are on both lists?

thank you.

解决方案

If file1.txt and file2.txt are sorted, you could use 'comm'

comm -12 file1.txt file2.txt > newlist.txt

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