CODEWITHSUNDEEP
linuxsedgrepcatcp
Allan Tori
Allan Tori

Reputation: 11

copy from text file to other text file , but not owerwiting first 2 lines

I would like to copy the contents of a text file has another text file but do not crush the first 2 lines of the other file, or copy and add the 2 lines to the new file

Exemple: user1.txt:

Phill
Johne
Marie
Arthuro

user2.txt:

Allow from:
Phill
Johne

Marie, Arthuro are new users from an account list, they must be copied to the authorized user file "txt2". I tried with several solution with cat, sed, grep, but I can't:

cat user1.txt | uniq > user2.txt;

I run uniq to avoid copying duplicate names, it is good but this solution overwrites "allow from" in user2.txt

Upvotes: 0

Views: 62

Answers (1)

Allan Tori
Allan Tori

Reputation: 11

this work fine :

grep -vFxf user2.txt user1.txt >> user2.txt

thank for your help

Upvotes: 0

Related Questions