osx - Find and Replace Image Files Between Two Folders -


i have 2 folders on mac's hard drive.

directory a, , directory b

both directories contain image files.

i need find matching filenames dir a.

if find match overwrite file in dir matching 1 dir b.

how should approach this?

rsync the best tool synchronizing files. has tons of options sure read man page in detail. 

rsync -rv --inplace --existing /path/to/dir/b/* /path/to/dir/a

if want write script should looking for: 

#!/bin/bash  dir_a='/path/to/dir_a' dir_b='/path/to/dir_b'  file in "$dir_b"/*;      name="${file##*/}"      if [[ -e $dir_a/$name ]];          echo "match found = $name";          cp "$file" "$dir_a"      fi done

what is, files in directory b , extracts file name (since use absolute paths). checks filename see if exists in directory a. -e test that. if successful test print message saying match found along filename. proceed copy file directory b directory a.

now may choose remove message prints out screen , use mv instead of cp if don't want copy present in directory b.


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