Files are sorted by columns by Perl

Perl is often used to process files in CSV format. Such files are similar to two-dimensional arrays, so operations on two-dimensional arrays are actually performed.
For such a row and column table, we often need to sort by a column or by a column first and then by another column. For specific operations, see the following implementation of "tables:

1.  
2. #! /Usr/bin/perl
3. My @ line;
4. While (<>)
5. {
6. Chomp;
7. Push @ line, [split];
8. }
9. Foreach (sort {$ A-> [0] <=> $ B-> [0] or $ A-> [1] <=> $ B-> [1] or $ A-> [2] <=> $ B-> [2]} @ line)
10. {
11. Print @ $ _, "N ";
12. }

Note:
It is best not to use large files in this way.
This script will move all the data to the memory.

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Files are sorted by columns by Perl