![]() but i nedd to diff between files other than object files. If you run it without the -n option, it will copy the missing (or different) files over to the target. This will list the files that are different (or new) in source-dir compared to target-dir. In my situation I have two directory trees with pictures which I want to unify.įiles from A will appear only if more than 1 equals is in A This can be rather painful if A and/or B contains a lot of files. There are programs like "fdupes" that look for duplicate files across directory trees but they also look for duplicates within A and B. In a situation, where I have had to compare remote directories on separate sites quickly and where time stamp was no good, I have used find with cksum to good effect.ĭirecting the output to a text file for the two directories then left me two text files to compare.ĭo you guys have a recommendation what to do in the following case: I have two potentially different directory trees, say A and B, and I want to know which files somewhere in A but not in B and vice verse. As the name sais, it's purpose is to sync them, but you can use it without actually changing anything.Įspecially if you are interested in missing/additional files AND changed files, rsync is cool, because it can compare the file contents without transfering the files over the wire, which makes it very fast. ![]() If you want to compare files between local and remote machines, look into "rsync". I found it as a file on backup, but not original, and three files that were not the same.īrian (he won't need it anymore, but maybe someone else finds it useful): I created an empty file in the middle of the directory structure of the backup. For example on Ubuntu using diff (GNU diffutils) 2.8.1, you must use the -r switch to get the full comparison. I'll just mount the remote filesystem using SSH-fuse or whatever. I was hoping for something to compare remote to local. Phyzome Assuming both files reside in remote machine. To change its behavior to recursively go down subdirectories, add -r. Note that by default diff does not reach into the subdirectories to compare the files and subdirectories at that level. That is why I piped the output of diff through sort in the above command. I prefer to group them by whether they are common, and whether they only exist If you are NOT interested in file differences, just add the -q (or -brief) option.įiles /home/peter/.bashrc and /home/george/.bashrc differĭiff orders its output alphabetically by file/subdirectory name. bashrc in the above listing) are diffed to see if and how the file contents differ. Files that are common in both directories (e.g. Without any option, diffing 2 directories will tell you which files only exist in 1 directory and not the other, and which are common files. < export PROMPT_COMMAND="history -a $PROMPT_COMMAND" In Linux, we use the same diff command to compare directories as well as files.ĭiff /home/peter/.bashrc /home/george/.bashrc Alas, that command is not available in Linux. Unix old-timers may remember the dircmp command. How do we compare 2 directories? Specifically, we want to know what files/subdirectories are common, what are only in 1 directory but not the other. Now we want to know the difference between the directories d1 and d2 and in order to print the difference we can make use of the command shown below − diff -q d1 d2 | cut -f2 -d ',' Output Only in d1: 1.txtĪnother command that we can make use of is also shown below − diff -qr d1 d2 Output Only in d1: 1.To compare 2 files, we use the diff command. rw-r-r- 1 immukul staff 0 Jul 5 20:03 2.txt Now the contents of the first directory d2 looks something like this − d2 % ls -ltr rw-r-r- 1 immukul staff 0 Jul 5 20:03 5.txt rw-r-r- 1 immukul staff 0 Jul 5 20:03 3.txt rw-r-r- 1 immukul staff 0 Jul 5 20:03 1.txt ![]() Now the contents of the first directory d1 looks something like this − d1 % ls -ltr Let’s explore the case where we have two directories d1 and d2 and both these directories contain some files in them.Ĭonsider the terminal output to depict these two directories shown below − linux-questions-code % ls -ltrĭrwxr-xr-x 5 immukul staff 160 Jul 5 20:03 d1ĭrwxr-xr-x 4 immukul staff 128 Jul 5 20:03 d2 This command is used to find the difference between two files as it compares both the files line by line. Let’s first explore the diff command, which is short for difference. In order to do that we must be familiar with either the diff command as the diff commands can be used to solve the above problem. Now we want to compare the files that are present in both these directories and by comparison we need to print out what files are different, what files are the same and in what directory. Let’s consider a case where we have two directories, say, d1 and d2 and both these directories contain some files, which may be the same or different.
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