$ ls dir1/
bin.sh convert.pl hex.cpp top.py
$ ls dir2/
bin.sh convert.pl touch.cpp
$ diff -r --brief dir1 dir2
Only in dir1: hex.cpp
Only in dir1: top.py
Only in dir2: touch.cpp
To copy the content of dir1 into dir2 without copying the files that are already exist and are the same, use rsync(faster, flexible replacement for rcp):
$ rsync -a dir1/ dir2/
Now comparing the two directories:
$ diff -r --brief dir1 dir2
Only in dir2: touch.cpp
Now doing a rsync of dir2 to dir1
$ rsync -a dir2/ dir1/
Now both the directories are the same, no difference.
$ diff -r --brief dir1 dir2
Posts
4 comments:
From man pages of 'diff'
-q --brief
Output only whether files differ.
-r --recursive
Recursively compare any subdirectories found.
rsync -auv dir1/ dir2/
Adding the u only updates a file if the source is newer than the destination.
Very very useful especially for backups.
M
@blinkingeye, thanks for the tip :-)
Just what I needed, quick and simple.
Thanks!
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