bash - 如何递归遍历目录树并仅查找文件？

Question

我正在使用 scp 调用来下载远程系统上存在的文件夹。下载的文件夹有子文件夹，在这些子文件夹中有一堆文件，我想将它们作为参数传递给 python 脚本，如下所示:

scp -r researcher@192.168.150.4:SomeName/SomeNameElse/$folder_name/ $folder_name/
echo "File downloaded successfully"
echo "Running BD scanner"
for d in $folder_name/*; do
        if [[ -d $d ]]; then
                echo "It is a directory"
        elif [[ -f $d ]]; then
                echo "It is a file"
                echo "Running the scanner :"
                 python bd_scanner_new.py /home/nsadmin/Some/bash_script_run_files/$d
        else
                echo "$d is invalid file"
                exit 1
        fi
done

我已经添加了逻辑来查找是否有任何目录并将它们排除在外。但是，我不会递归地遍历这些目录。

部分结果如下:

File downloaded succesfully
Running BD scanner
It is a directory
It is a directory
It is a directory
Exiting

我想改进这段代码，让它遍历所有目录并获取所有文件。请帮助我提出任何建议。

Answer 1

您可以在 Bash 4.0+ 中使用 shopt -s globstar:

#!/bin/bash

shopt -s globstar nullglob
cd _your_base_dir
for file in **/*; do
  # will loop for all the regular files across the entire tree
  # files with white spaces or other special characters are gracefully handled
  python bd_scanner_new.py "$file"
done

Bash 手册关于 globstar 是这样说的:

If set, the pattern ‘**’ used in a filename expansion context will match all files and zero or more directories and subdirectories. If the pattern is followed by a ‘/’, only directories and subdirectories match.

更多 globstar 讨论在这里:https://unix.stackexchange.com/questions/117826/bash-globstar-matching