Comparing 2 UNIX directories

Shell Programming and Scripting
1

Hello,

I'd want to compare the content of 2 directories in unix.
I use the diff command like this:

diff /home/user/AAAAA /home/user/BBBBB

It works fine, but when a same file is in both directories and they are diferents, I'd want to see only that it is diferent and not all diferencies.

I tried:

diff -c but it doesn't works.

Could anyone help me please ?

thanks in advance

2

If GNU diff is available to you, you could use the --brief option to do what you want.

3

Would

cmp -s

do?

4

Or the long way.

for file in `ls dir1`
do
if [ -r dir2/$file ]
then
        diff $file dir2/$file >/dev/null
        if [ $? -eq 1 ]
                echo $file is diff
        else
                echo $file is same in both directories
        fi
else
        echo $file does not exist id dir2
fi
done

then reverse dir1 and dir2 to find files that exist in dir2 that do not exist in dir1

5

This could be a poor choice, since it will break if file names contain spaces.