linux - 按每个目录 5 个文件过滤列表

Question

所以我在文件夹树中有一个文件列表

/home/user/Scripts/example/tmp/folder2/2
/home/user/Scripts/example/tmp/folder2/3
/home/user/Scripts/example/tmp/folder2/4
/home/user/Scripts/example/tmp/folder2/5
/home/user/Scripts/example/tmp/folder2/6
/home/user/Scripts/example/tmp/folder2/7
/home/user/Scripts/example/tmp/folder2/8
/home/user/Scripts/example/tmp/folder2/9
/home/user/Scripts/example/tmp/folder2/10
/home/user/Scripts/example/tmp/other_folder/files/1
/home/user/Scripts/example/tmp/other_folder/files/2
/home/user/Scripts/example/tmp/other_folder/files/3
/home/user/Scripts/example/tmp/other_folder/files/4
/home/user/Scripts/example/tmp/other_folder/files/5
/home/user/Scripts/example/tmp/other_folder/files/6
/home/user/Scripts/example/tmp/other_folder/files/7
/home/user/Scripts/example/tmp/other_folder/files/8
/home/user/Scripts/example/tmp/other_folder/files/9
/home/user/Scripts/example/tmp/other_folder/files/10
/home/user/Scripts/example/tmp/test/example/1
/home/user/Scripts/example/tmp/test/example/2
/home/user/Scripts/example/tmp/test/example/3
/home/user/Scripts/example/tmp/test/example/4
/home/user/Scripts/example/tmp/test/example/5
/home/user/Scripts/example/tmp/test/example/6
/home/user/Scripts/example/tmp/test/example/7
/home/user/Scripts/example/tmp/test/example/8
/home/user/Scripts/example/tmp/test/example/9
/home/user/Scripts/example/tmp/test/example/10
/home/user/Scripts/example/tmp/test/other/1
/home/user/Scripts/example/tmp/test/other/2
/home/user/Scripts/example/tmp/test/other/3
/home/user/Scripts/example/tmp/test/other/4
/home/user/Scripts/example/tmp/test/other/5
/home/user/Scripts/example/tmp/test/other/6
/home/user/Scripts/example/tmp/test/other/7
/home/user/Scripts/example/tmp/test/other/8
/home/user/Scripts/example/tmp/test/other/9
/home/user/Scripts/example/tmp/test/other/10

我想基本上过滤掉这个列表的内容，所以我只有每个目录的前 5 个数字。
有任何想法吗？

在 bash/shell 中更可取

预期输出：（SO 的小样本量导致代码过多）

/home/user/Scripts/example/tmp/test/example/6
/home/user/Scripts/example/tmp/test/example/7
/home/user/Scripts/example/tmp/test/example/8
/home/user/Scripts/example/tmp/test/example/9
/home/user/Scripts/example/tmp/test/example/10
/home/user/Scripts/example/tmp/test/other/6
/home/user/Scripts/example/tmp/test/other/7
/home/user/Scripts/example/tmp/test/other/8
/home/user/Scripts/example/tmp/test/other/9
/home/user/Scripts/example/tmp/test/other/10

谢谢

编辑 - 使用for i in $(for i in $(dirname $(find $(pwd) -type f -name "*[0-9]*" | sort -V) | uniq) ;do ls $i | sort -V |tail -n 5 ; done) ; do readlink -f $i ; done适用于小样本量的作品。然而，扩展所述样本似乎需要 dirname

标签： linuxbashshell

Answer 1

假设您的输入数据已排序。尝试：

awk -F'/[^/]*$'  '{if (NR==1 || prev_dir == $1) {i=i+1} else {i=1}; if ( i<=5){ prev_dir=$1 ; print $0}; }'

解释：

'/[^/]*$'<-- 设置正则表达式分隔符以获取目录基名作为第一个字段

if (NR==1 || prev_dir == $1) {i=i+1} else {i=1}; <-- 检查文件来自同一目录。如果是，则将计数器增加 1，否则重置。

if ( i<=5){ prev_dir=$1 ; print $0}; }'<-- 打印当前目录的前 5 条记录。

演示：

$awk -F'/[^/]*$'  '{if (NR==1 || prev_dir == $1) {i=i+1} else {i=1}; if ( i<=5){ prev_dir=$1 ; print $0 }; }' temp.txt
/home/user/Scripts/example/tmp/folder2/2
/home/user/Scripts/example/tmp/folder2/3
/home/user/Scripts/example/tmp/folder2/4
/home/user/Scripts/example/tmp/folder2/5
/home/user/Scripts/example/tmp/folder2/6
/home/user/Scripts/example/tmp/other_folder/files/1
/home/user/Scripts/example/tmp/other_folder/files/2
/home/user/Scripts/example/tmp/other_folder/files/3
/home/user/Scripts/example/tmp/other_folder/files/4
/home/user/Scripts/example/tmp/other_folder/files/5
$cat temp.txt 
/home/user/Scripts/example/tmp/folder2/2
/home/user/Scripts/example/tmp/folder2/3
/home/user/Scripts/example/tmp/folder2/4
/home/user/Scripts/example/tmp/folder2/5
/home/user/Scripts/example/tmp/folder2/6
/home/user/Scripts/example/tmp/folder2/7
/home/user/Scripts/example/tmp/folder2/8
/home/user/Scripts/example/tmp/folder2/9
/home/user/Scripts/example/tmp/folder2/10
/home/user/Scripts/example/tmp/other_folder/files/1
/home/user/Scripts/example/tmp/other_folder/files/2
/home/user/Scripts/example/tmp/other_folder/files/3
/home/user/Scripts/example/tmp/other_folder/files/4
/home/user/Scripts/example/tmp/other_folder/files/5
/home/user/Scripts/example/tmp/other_folder/files/6
/home/user/Scripts/example/tmp/other_folder/files/7
/home/user/Scripts/example/tmp/other_folder/files/8
/home/user/Scripts/example/tmp/other_folder/files/9
/home/user/Scripts/example/tmp/other_folder/files/10
$