如何以递归方式将子目录添加到PATH？

function add_subdirs_to_path() {
    local DIR
    for DIR in "$@"; do
        for SUBDIR in "$DIR"/*; do
            if [ -d "$SUBDIR" ]; then
                export PATH="$PATH:$SUBDIR"
                add_subdirs_to_path "$SUBDIR"
            fi
        done
    done
}

add_subdirs_to_path /path/to/parent_directory

function Add-SubdirectoriesToPath {
    param(
        [string[]]$Paths
    )
    foreach ($PathItem in $Paths) {
        $subdirs = Get-ChildItem $PathItem -Directory
        foreach ($subdir in $subdirs) {
            $env:Path += ";$($subdir.FullName)"
            Add-SubdirectoriesToPath $subdir.FullName
        }
    }
}

Add-SubdirectoriesToPath "C:\path\to\parent_directory"