Copying/moving and renaming files from multiple subdirectories to parent directory

Question

I have multiple directories, and each one of those directories contains an "example" directory which in turn contains images. What I want to do, is to add a textual suffix at the end of a filename (but which precedes the extension) to each file and then copy the contents of the directory into its respective parent directory.

Basically I want the files from /maindir/dir1/example/, /maindir/dir2/example etc. to be renamed and copied/moved to their respective parent directories, i.e. dir1 and dir2. The contents of all "example" dirs are images with a .jpg extension. I don't know if I am going about this the right way but I managed to figure out how to do the copying part by doing this:

find /path/to/folder/ -type d -name example  -execdir bash -c 'cp  "$1"/* .' cp {}   \;

which copies the content into the parent folder correctly, but I'm kinda stumped on how do I go about adding a suffix to the copied files while using find.

Answer 1

One way would be to use find and a for loop and for each file path use parameter expansion to extract the extension (t=${f##*.}), the basename (b=${f##*/}) and the basename without extension (${b%.*}) so as to be able to create the destination name (n=${b%.*}-thumb.${t}):

find /path/to/folder/ -type d -name example  -execdir sh -c 'for f in "${1}"/*;
do t=${f##*.}; b=${f##*/}; n=${b%.*}-thumb.${t}; cp -- "$f" "$n"; done' cp {} \;

You can always insert an echo before cp to print what would be executed.

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Another way with zsh:

autoload zmv
zmv -n '(**/)example/(*)(.*)' '${1}${2}-thumb${3}'

Replace the -n (dry-run) with -C to copy the files.