将所有文件移动到以部分文件名命名的子目录中

这基本上可以满足您的要求，尽管您要求很多，所以请让我知道您是否有任何困惑的地方，我将尽力向他们解释：

#!/usr/bin/env bash

song_dir="$HOME/tmp/songs"
out_dir="$HOME/tmp/org_songs"

[[ ! -d "$out_dir" ]] && mkdir -p "$out_dir"

get_artist () {
    local a=($(tr '_' ' ' <<<"$1"))
    for i in "${a[@]}"; do
        if [[ $i =~ artiste.* ]]; then
            printf '%s\n' "${i#*=}"
            break
        fi
    done
}

get_album () {
    local a=($(tr '_' ' ' <<<"$1"))
    for i in "${a[@]}"; do
        if [[ $i =~ album.* ]]; then
            printf '%s\n' "${i#*=}"
            break
        fi
    done
}

get_song () {
    local a=($(tr '_' ' ' <<<"$1"))
    for i in "${a[@]}"; do
        if [[ $i =~ song.* ]]; then
            printf '%s\n' "${i#*=}"
            break
        fi
    done
}

for song in "${song_dir}/"*.mp3; do
    bname=$(basename "$song")
    artist=$(get_artist "$bname")
    album=$(get_album "$bname")
    sname=$(get_song "$bname")
    [[ ! -d "${out_dir}/${artist}/${album}" ]] && mkdir -p "${out_dir}/${artist}/${album}"
    cp "$song" "${out_dir}/${artist}/${album}/${sname}"
done

正在使用：

前：

$ tree
.
├── script.sh
└── songs
    ├── artiste=linkin-park_album=meteora_id=02_song=Don't-stay.mp3
    ├── artiste=linkin-park_album=meteora_id=02_song=Session.mp3
    ├── artiste=linkin-park_album=meteora_id=02_song=Somewhere-I-Belong.mp3
    ├── artiste=linkin-park_album=minutes-of-midnight_id=04_song=Bleed-It-Out.mp3
    ├── artiste=linkin-park_album=minutes-of-midnight_id=04_song=Given-Up.mp3
    ├── artiste=linkin-park_album=minutes-of-midnight_id=04_song=Leave-out-All-The-Rest.mp3
    ├── id=01_artiste=eminem_album=recovery_song=cold-wind-blows.mp3
    ├── id=01_artiste=eminem_album=recovery_song=on-fire.mp3
    └── id=01_artiste=eminem_album=recovery_song=talking-2-myself-(feat-kobe).mp3

1 directory, 10 files

后：

$ tree
.
├── org_songs
│   ├── eminem
│   │   └── recovery
│   │       ├── cold-wind-blows.mp3
│   │       ├── on-fire.mp3
│   │       └── talking-2-myself-(feat-kobe).mp3
│   └── linkin-park
│       ├── meteora
│       │   ├── Don't-stay.mp3
│       │   ├── Session.mp3
│       │   └── Somewhere-I-Belong.mp3
│       └── minutes-of-midnight
│           ├── Bleed-It-Out.mp3
│           ├── Given-Up.mp3
│           └── Leave-out-All-The-Rest.mp3
├── script.sh
└── songs
    ├── artiste=linkin-park_album=meteora_id=02_song=Don't-stay.mp3
    ├── artiste=linkin-park_album=meteora_id=02_song=Session.mp3
    ├── artiste=linkin-park_album=meteora_id=02_song=Somewhere-I-Belong.mp3
    ├── artiste=linkin-park_album=minutes-of-midnight_id=04_song=Bleed-It-Out.mp3
    ├── artiste=linkin-park_album=minutes-of-midnight_id=04_song=Given-Up.mp3
    ├── artiste=linkin-park_album=minutes-of-midnight_id=04_song=Leave-out-All-The-Rest.mp3
    ├── id=01_artiste=eminem_album=recovery_song=cold-wind-blows.mp3
    ├── id=01_artiste=eminem_album=recovery_song=on-fire.mp3
    └── id=01_artiste=eminem_album=recovery_song=talking-2-myself-(feat-kobe).mp3

7 directories, 19 files

另请注意，我cp用来复制文件而不是mv移动文件。我建议仅先进行复制，然后再删除旧文件，只要一切正常即可。否则，您可能会弄乱或丢失一些数据。