I am a first-timer at programming, and I'm trying to find the intersection of two text files.
file1.txt
a a
a b
a a
a c
file2.txt
a a
I want to get the result below in file1 (lines in file2 that are in file1)
a a
a a
I try to use grep command in Linux but I don't know how to do it.
I saw something similar here https://stackoverflow.com/a/36591385/4053813
< file1 xargs -I % grep -xF '%' file2
Edit: As pointed out by @Julien Lopez I added -xF options to grep command.
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