how to use grep -f and -v together

user1738234

4/22/23, 4:22 PM

I have 2 files and I extracted information from file 2 based on file 1 by using grep -f file1 file2. Now if I want to use the output file to check if the columns based on file 1 are not there how can I do this efficiently. Grep -f -v do not work together. I tried the comm -12 file1 file2 command but it does not work. Need some guidance on grep -F -x -v -f file1 file2

Kindly help.

0 + 0

grep

waltinator

4/22/23, 6:11 PM

Read `man grep`.

Score:1

Ubuntu

pasman pasmański

4/22/23, 8:52 PM

Your command works as expected:

$ cat file1
b
c
$ cat file2
a
b
c
d
$ grep -Fxvf file1 file2
a
d

0 + 0

user1738234

4/23/23, 10:53 AM

Thanks for the guidance. I was wondering if I could have as output only those fields from file2 which are present in file1, the rest ignored. Kindly help.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: how to use grep -f and -v together

TH: วิธีใช้ grep -f และ -v ร่วมกัน

RO: cum să folosiți grep -f și -v împreună

RU: как использовать grep -f и -v вместе

VI: cách sử dụng grep -f và -v cùng nhau

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