Linux：按名称顺序将多个文件批量重命名为父目录+后缀

Question

I need to batch rename multiple images and want to use the parent directory as base name. To prevent one overwriting the other, a suffix must be added. The order of the renaming process musts follow the timestamp of the file. Because the 'first' file is a featured image for the site I'm using it for.

Tree:

└── main
├── white tshirt
│   ├── IMG_1.jpg
│   ├── IMG_2.jpg
│   ├── IMG_3.jpg
│   └── IMG_4.jpg
├── black tshirt
│   ├── IMG_1.jpg
│   ├── IMG_2.jpg
│   ├── IMG_3.jpg
│   └── IMG_4.jpg
└── red tshirt
    ├── IMG_1.jpg
    ├── IMG_2.jpg
    ├── IMG_3.jpg
    └── IMG_4.jpg

Goal:

└── main
├── white tshirt
│   ├── white-tshirt-1.jpg
│   ├── white-tshirt-2.jpg
│   ├── white-tshirt-3.jpg
│   └── white-tshirt-4.jpg
├── black tshirt
│   ├── black-tshirt-1.jpg
│   ├── black-thisrt-2.jpg
│   ├── black-tshirt-3.jpg
│   └── black-tshirt-4.jpg
└── red tshirt
    ├── red-tshirt-1.jpg
    ├── red-tshirt-2.jpg
    ├── red-tshirt-3.jpg
    └── red-tshirt-4.jpg

Replacing spaces with dashes is not required, but preferred. Platform: Debian 8

Answer 1

I think this should do the job:

#!/bin/sh

for dir in *; do
    if [ ! -d "$dir" ]; then
        continue
    fi

    cd "$dir"

    pref=$(echo "$dir" | tr ' ' -)

    i=1
    ls -tr | while read f; do
        ext=$(echo "$f" | sed 's/.*\.//')
        mv "$f" "${pref}-${i}.$ext"
        i=$(expr $i + 1)
    done

    cd ..
done

Invoke the script inside your main directory and make sure there are only your target folders in it. Also make sure your files'names do not contain the character '\\'