Need Help in comparing 2 text files in shell script

Shell Programming and Scripting
1

Hi All,

I have 2 files like below

vi f1

frog
elephant
rabit
zebra
dog

vi f2

rabit
dog

==============

Now i want to comapre two files and the result will be

frog
elephant
zebra

that means...the elements are not in f2 while compare with f1

Kindly do me helpfull

Thanks

2

You may use comm command. Look at

man comm
3 
nawk 'FNR==NR{a[$1]++;next}!a[$1]' f2 f1
use awk for linux
4

Try:

grep -vf f2 f1
1 Like
5

Thank you very much for replying me.

I have used

comm-3 f1 f2

...but i m not getting the required out put

6

comm only works on lexically sorted files.

7

my grep does not support "f" option unfortunately so i went for awk.

bash-3.00$ grep -vf f2 f1
grep: illegal option -- f
Usage: grep -hblcnsviw pattern file . . .
8

i got it by using " grep -vf f2 f1".... Thanks a lot

9

Try /usr/xpg4/bin/grep instead