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- Merging folders on a Mac is kind of a pain. When you do it, Finder tries to overwrite any file with the same name with the newer version. That means it's easy to accidentally erase a whole folder.
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Copy directory hierarchies, create and extract archives. Ditto can preserve ownership / permissions, resource forks and file / folder metadata. Ditto will automatically create the destination folder if it doesn’t yet exist, if the destination does exist and contains files, then ditto will merge them.
Install Ditto
Unlike cp -R, if the destination folder already exists, the existing contents will be merged with the contents of the folder being copied.
Examples
Copy a folder quotes are needed because of the space in the folder name. Note that this will merge the files into the destination:
ditto '~/Desktop/work files' '/Volumes/work backup'
To also preserve the Mac resource forks, type and creator codes use (only required prior to 10.4):
ditto -rsrc '~/Desktop/work files' '/Volumes/work backup'
Don’t copy metadata and resource forks:
ditto -V --norsrc '~/Desktop/work files' '/Volumes/work backup'
“The Borgesian meta-library contains a copy of every book ever written, but my dream-artifact is already, and always, every book ever written, on demand” - William Gibson
Related macOS commands:
cp - Copy files.
dd - Data Duplicator - convert and copy a file.
install - Copy files and set attributes.
mv - Move Files.
tar - store or extract files to an archive (allows symbolic links to be copied as links.)
Ditto For Mac Download
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