![]() Lucas Kauffman at 22:23 4 This solution will not scale. ![]() You can also use rsync to basically do this same thing for you, even when copying or comparing across a network. two ways: open 2 shells go into both folders and do the same ls -al command, or 1 shell with tmux or just go into one folder do the command go into the other and do the same command again. Note that the above commands ignore empty directories, file permissions, timestamps of when files were last edited, etc. Piping to awk extractsįind mydir -type f -exec sha256sum 'Ĩf493478e7bb77f1d025cba31068c1f1c8e1eab436f8a3cf79d6e60abe2cd2e4ĭo this on each computer, then ensure the hashes are the same to know if the directories are the same. Comparing Two Directories in Linux As per the above output, the diff command thoroughly analyzes the differences and commonalities in the two directories. I did some research, and there are many diff tools, but I am not interested in. Folders - source source2 - file1 - file1 - file2 - file2 - file3 - file4 - file5 - file5 - file6 - file7 Output should be: - Source -> Missing files file4 Source2 -> Missing files file3. # order to ensure a consistent final hash result. Here is scenario that may explain the issue. # necessary by piping to `sort` to ensure we get a consistent file order in hash all files inside `mydir`, then hash the list of all hashes and their # going to hash the paths too, not just the file contents, so this matters.Ĭd /home/gabriel/dev/repos # example on computer 2 The diff command compares two files and produces a list of the differences between the two. # between the two computers since the absolute paths to `mydir` differ. How to Compare Two Text Files in the Linux Terminal Diving into diff. # important! If you don't do this, then the paths output by find will differ The diff command can also be used to compare two directories, which is useful for finding out which files have been added, deleted, or modified. First, cd to the dir in which the dir of interest is found. In Linux, the diff command is used to compare two files side by side and output the differences between them. (From my answer here: How to hash all files in an entire directory, including the filenames as well as their contents): # 1. Hash the dir on one computer on that computer, and on the other computer on that computer. So, if you are comparing a 3 GB dir, all 3 GB have to be transferred across the network just to see if the remote dir and local dir are the same. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. Using ls would be better for your purpose as it can display various information, including the permissions, dates and sizes. However, if trying to compare two folders on different computers, or across a network, don't do that! If across a network, it will take forever since it has to actually transmit every byte of every file in the folder across the network. One easy way of doing it on Linux would be to: Use find or ls to list out all the files in each directory and pipe the results into different log files. If comparing two folders on the same computer, diff is fine, as explained by the main answer. when comparing two folders across a network drive or on separate computers
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