Comparing two txt files - pls help

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# 1  
Old 01-23-2008
CPU & Memory Comparing two txt files - pls help


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

1.log.txt contains


2.log.txt contains


In my 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 i should get common.txt and

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


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

Thanks in advance
# 2  
Old 01-23-2008
I have searched the forum and got the answer for this...I used "comm"

# 3  
Old 01-23-2008
Remmeber that comm will work only for sorted files.
# 4  
Old 01-23-2008


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  
Old 01-23-2008
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 ..
# 6  
Old 01-23-2008
Originally Posted by dennis.jacob
Remmeber that comm will work only for sorted files.
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
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