Bash - 数字排序在1s之前排序10s

时间:2012-03-31 12:26:31

标签: bash sorting numerical

我在一个目录中。有两个子目录,我想按数字顺序列出它们中的文件。在第一个目录中,文件名为01,02,03 ......它们排序很好。但是在第二个目录中,文件被命名为1,2,3,因此在1之前的10个排序。键控似乎不起作用,因为我是从文件返回的目录,所以脚本如下:

find "$PWD" -type f|sort -n -t _ -k 1

不起作用。如何按真正的数字顺序列出?

3 个答案:

答案 0 :(得分:2)

排序手册:Sort numerically: the number begins each line ... 我怀疑find的输出是否会如此。因此,您应该编写一个脚本,从文件名中删除前导字符,然后调用sort。

例如find "$WORD" -type f | cut -d / -f 2-将以数字方式对第一级目录中的文件名进行排序,但其余的不会按数字排序。

您必须根据需要编写脚本,但如果您要查找的内容位于单个目录中,则上述行将会执行。

答案 1 :(得分:0)

你提出了一个有趣的挑战。试试这个Perl脚本:

#!/usr/bin/perl
use warnings;
use strict;
use integer;

# This script sorts filenames while respecting their ordinal component,
# outputting 'dir/stem9.ext' before 'dir/stem10.ext'.  As input, it
# expects one filename per line on stdin.

our $n_digits = 6;

sub compare_filenames_ordinally ($$) {
    my ($a, $b) = @_;
    my $pattern = qr|^(.*?)(\d*)((?:\.[^/\d]*)?)$|;
    my ($stem_a, $ordinal_a, $extension_a) = $a =~ /$pattern/;
    my ($stem_b, $ordinal_b, $extension_b) = $b =~ /$pattern/;
    length($ordinal_a) <= $n_digits && length($ordinal_b) <= $n_digits
      or die "$0: the ordinal part of the filename "
      . "is longer than $n_digits digits\n";
    my $ordinal_a1 = length($ordinal_a)
      ? sprintf "%0${n_digits}d", $ordinal_a : '';
    my $ordinal_b1 = length($ordinal_b)
      ? sprintf "%0${n_digits}d", $ordinal_b : '';
    my $a1 = "${stem_a}${ordinal_a1}${extension_a}";
    my $b1 = "${stem_b}${ordinal_b1}${extension_b}";
    return $a1 cmp $b1;
}

my @file = <>;
chomp for @file;
@file = sort { compare_filenames_ordinally $a, $b } @file;
print "$_\n" for @file;

该脚本无疑可以得到改进,尤其是因为它重复了$a$b的一些代码行,但它的想法是扩展了 dir / stem10 .txt dir / stem000010.txt ,然后将其与其他文件名进行比较。

答案 2 :(得分:0)

这可能对您有用:

mkdir test
cd test
mkdir t1 t2
cd t1
seq -f 'test_%02g.txt 20 | xargs touch
cd ../t2
touch test_{1..20}.txt
cd ..
find . -type f | sort -t_ -k1,1 -k2,2g
./t1/test_01.txt
./t1/test_02.txt
./t1/test_03.txt
./t1/test_04.txt
./t1/test_05.txt
./t1/test_06.txt
./t1/test_07.txt
./t1/test_08.txt
./t1/test_09.txt
./t1/test_10.txt
./t1/test_11.txt
./t1/test_12.txt
./t1/test_13.txt
./t1/test_14.txt
./t1/test_15.txt
./t1/test_16.txt
./t1/test_17.txt
./t1/test_19.txt
./t1/test_20.txt
./t2/test_1.txt
./t2/test_2.txt
./t2/test_3.txt
./t2/test_4.txt
./t2/test_5.txt
./t2/test_6.txt
./t2/test_7.txt
./t2/test_8.txt
./t2/test_9.txt
./t2/test_10.txt
./t2/test_11.txt
./t2/test_12.txt
./t2/test_13.txt
./t2/test_14.txt
./t2/test_15.txt
./t2/test_16.txt
./t2/test_17.txt
./t2/test_18.txt
./t2/test_19.txt
./t2/test_20.txt

或者这个:

find . -type f | 
sed 'h;s/.*\//& /;H;s/.* //;s/[^0-9]//g;x;G;s/\n/ /g' |
sort -k2,2 -k4,4g |
cut -d' ' -f1
./t1/test_01.txt
./t1/test_02.txt
./t1/test_03.txt
./t1/test_04.txt
./t1/test_05.txt
./t1/test_06.txt
./t1/test_07.txt
./t1/test_08.txt
./t1/test_09.txt
./t1/test_10.txt
./t1/test_11.txt
./t1/test_12.txt
./t1/test_13.txt
./t1/test_14.txt
./t1/test_15.txt
./t1/test_16.txt
./t1/test_17.txt
./t1/test_19.txt
./t1/test_20.txt
./t2/test_1.txt
./t2/test_2.txt
./t2/test_3.txt
./t2/test_4.txt
./t2/test_5.txt
./t2/test_6.txt
./t2/test_7.txt
./t2/test_8.txt
./t2/test_9.txt
./t2/test_10.txt
./t2/test_11.txt
./t2/test_12.txt
./t2/test_13.txt
./t2/test_14.txt
./t2/test_15.txt
./t2/test_16.txt
./t2/test_17.txt
./t2/test_18.txt
./t2/test_19.txt
./t2/test_20.txt