Comparing two txt files - pls help

Shell Programming and Scripting
1

Hi,

I have some text files. I need a separate shell say 1.sh in which i can open a particular text file and compare with another txt file. For example:

1.log.txt contains

apple
ball
cat
goat

2.log.txt contains

goat
cat
lion
apple
fox

In my i.sh i need to write script to compare this two files and write the the o/p.The output should be written onto two different files such that one file contains the words that match and another contains the words that do not match.That is after i run 1.sh i should get common.txt and
notcommon.txt

common.txt should contains words present in both(common to both 1.og.txt & 2.log.txt ).i.e;

apple
ca
goat

nocommon.txt should contain the words present only in 2.log.txt and not in 1.log.txt . i.e;
lion
fox

Thanks in advance
JS

2

I have searched the forum and got the answer for this...I used "comm"

Thanks
JS

3

Remmeber that comm will work only for sorted files.

4

Hi,

If you are not considering the sequence of the line in the original txt file. I think you can use comm command.

Try below one.

sort file1 > file1.temp
sort file2 > file2.temp
comm -12 file1.temp file2.temp > common.txt
comm -13 file1.temp file2.temp >uncommon.txt
5

That is a better code than waht i tried ..
i didnot sort my source files but it was almost in a sorted way .. But its always a good method to sort the files before compiling it ..
Thanks a lot for the quote ..
Regards
JS

6

thanks for pointing it out .. Actually teh fils where sorted. Hence I ddint go for sorting .. The example i gave was for the name sake ..its not teh actual format of my file ..

thanks a lot for pointing it out .. because i didnt know about it .. its going to help me in the future ..

thanks a lot
JS