bash command for make difference between two txt file

kkpal · 05-12-2008, 06:13 AM

hi all

I have two txt file (let test1.txt and test2.txt. These txt file contains names. I want make a 3rd txt file which contain names(those name which are exists only in file test1.txt) and 4th txt file which contain (those name which are exists only in file test2.txt).
what is solution of this problem?

Thanks & Regards
KKPal

elthox · 05-12-2008, 06:22 AM

Quote:

Originally Posted by kkpal

hi all

I have two txt file (let test1.txt and test2.txt. These txt file contains names. I want make a 3rd txt file which contain names(those name which are exists only in file test1.txt) and 4th txt file which contain (those name which are exists only in file test2.txt).
what is solution of this problem?

Thanks & Regards
KKPal

Check with this: diff text1 text2
and manipulate the output using > and < which indicate wo thich file the lines belong

pixellany · 05-12-2008, 06:24 AM

Take a look at "cmp" and "diff"

kkpal · 05-12-2008, 06:28 AM

Quote:

Originally Posted by elthox

Check with this: diff text1 text2
and manipulate the output using > and < which indicate wo thich file the lines belong

I had use diff.
diff test1.txt test2.txt > text.txt

but it wasn't work.

I need only difference not details

Thanks & Regards
KKPal

elthox · 05-12-2008, 06:31 AM

Quote:

Originally Posted by kkpal

I had use diff.
diff test1.txt test2.txt > text.txt

but it wasn't work.

I need only difference not details

Thanks & Regards
KKPal

diff test1 test2|grep ">"|cut -d' ' -f2 > test3
diff test2 test1|grep "<"|cut -d' ' -f2 > test4

pixellany · 05-12-2008, 06:40 AM

elthox gave you the answer....

Quote:

and manipulate the output using > and < which indicate wo thich file the lines belong

Example: To get everything in file2 that is not in file1:
diff file1 file2 | grep ">"

Then use SED to remove the leading ">"

EDIT: Elthox beat me to the punch, AND with a better answer...

elthox · 05-12-2008, 06:52 AM

Quote:

Originally Posted by pixellany

elthox gave you the answer....

Example: To get everything in file2 that is not in file1:
diff file1 file2 | grep ">"

Then use SED to remove the leading ">"

EDIT: Elthox beat me to the punch, AND with a better answer...

Is this better or my ignorance is just persisting

diff test1 test2|awk '$1=="<"&&$2!=""{print $2}' > test3 (the lines in test 1 and not in test2)

pixellany · 05-12-2008, 07:07 AM

Quote:

Originally Posted by elthox

Is this better or my ignorance is just persisting

diff test1 test2|awk '$1=="<"&&$2!=""{print $2}' > test3 (the lines in test 1 and not in test2)

Now we're going to have an AWK vs SED debate???

"Persistent Ignorance".....I LIKE it...I think I can use this.....